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+// Copyright 2019 Google LLC.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+syntax = "proto3";
+
+package google.cloud.dialogflow.v2;
+
+import "google/api/annotations.proto";
+import "google/api/resource.proto";
+import "google/cloud/dialogflow/v2/context.proto";
+import "google/longrunning/operations.proto";
+import "google/protobuf/duration.proto";
+import "google/protobuf/empty.proto";
+import "google/protobuf/field_mask.proto";
+import "google/protobuf/struct.proto";
+
+option cc_enable_arenas = true;
+option csharp_namespace = "Google.Cloud.Dialogflow.V2";
+option go_package = "google.golang.org/genproto/googleapis/cloud/dialogflow/v2;dialogflow";
+option java_multiple_files = true;
+option java_outer_classname = "IntentProto";
+option java_package = "com.google.cloud.dialogflow.v2";
+option objc_class_prefix = "DF";
+
+// An intent represents a mapping between input from a user and an action to
+// be taken by your application. When you pass user input to the
+// [DetectIntent][google.cloud.dialogflow.v2.Sessions.DetectIntent] (or
+// [StreamingDetectIntent][google.cloud.dialogflow.v2.Sessions.StreamingDetectIntent]) method, the
+// Dialogflow API analyzes the input and searches
+// for a matching intent. If no match is found, the Dialogflow API returns a
+// fallback intent (`is_fallback` = true).
+//
+// You can provide additional information for the Dialogflow API to use to
+// match user input to an intent by adding the following to your intent.
+//
+// *   **Contexts** - provide additional context for intent analysis. For
+//     example, if an intent is related to an object in your application that
+//     plays music, you can provide a context to determine when to match the
+//     intent if the user input is "turn it off". You can include a context
+//     that matches the intent when there is previous user input of
+//     "play music", and not when there is previous user input of
+//     "turn on the light".
+//
+// *   **Events** - allow for matching an intent by using an event name
+//     instead of user input. Your application can provide an event name and
+//     related parameters to the Dialogflow API to match an intent. For
+//     example, when your application starts, you can send a welcome event
+//     with a user name parameter to the Dialogflow API to match an intent with
+//     a personalized welcome message for the user.
+//
+// *   **Training phrases** - provide examples of user input to train the
+//     Dialogflow API agent to better match intents.
+//
+// For more information about intents, see the
+// [Dialogflow
+// documentation](https://cloud.google.com/dialogflow-enterprise/docs/intents-overview).
+service Intents {
+  // Returns the list of all intents in the specified agent.
+  rpc ListIntents(ListIntentsRequest) returns (ListIntentsResponse) {
+    option (google.api.http) = {
+      get: "/v2/{parent=projects/*/agent}/intents"
+    };
+  }
+
+  // Retrieves the specified intent.
+  rpc GetIntent(GetIntentRequest) returns (Intent) {
+    option (google.api.http) = {
+      get: "/v2/{name=projects/*/agent/intents/*}"
+    };
+  }
+
+  // Creates an intent in the specified agent.
+  rpc CreateIntent(CreateIntentRequest) returns (Intent) {
+    option (google.api.http) = {
+      post: "/v2/{parent=projects/*/agent}/intents"
+      body: "intent"
+    };
+  }
+
+  // Updates the specified intent.
+  rpc UpdateIntent(UpdateIntentRequest) returns (Intent) {
+    option (google.api.http) = {
+      patch: "/v2/{intent.name=projects/*/agent/intents/*}"
+      body: "intent"
+    };
+  }
+
+  // Deletes the specified intent and its direct or indirect followup intents.
+  rpc DeleteIntent(DeleteIntentRequest) returns (google.protobuf.Empty) {
+    option (google.api.http) = {
+      delete: "/v2/{name=projects/*/agent/intents/*}"
+    };
+  }
+
+  // Updates/Creates multiple intents in the specified agent.
+  //
+  // Operation <response: [BatchUpdateIntentsResponse][google.cloud.dialogflow.v2.BatchUpdateIntentsResponse]>
+  rpc BatchUpdateIntents(BatchUpdateIntentsRequest) returns (google.longrunning.Operation) {
+    option (google.api.http) = {
+      post: "/v2/{parent=projects/*/agent}/intents:batchUpdate"
+      body: "*"
+    };
+  }
+
+  // Deletes intents in the specified agent.
+  //
+  // Operation <response: [google.protobuf.Empty][google.protobuf.Empty]>
+  rpc BatchDeleteIntents(BatchDeleteIntentsRequest) returns (google.longrunning.Operation) {
+    option (google.api.http) = {
+      post: "/v2/{parent=projects/*/agent}/intents:batchDelete"
+      body: "*"
+    };
+  }
+}
+
+// Represents an intent.
+// Intents convert a number of user expressions or patterns into an action. An
+// action is an extraction of a user command or sentence semantics.
+message Intent {
+  // Represents an example that the agent is trained on.
+  message TrainingPhrase {
+    // Represents a part of a training phrase.
+    message Part {
+      // Required. The text for this part.
+      string text = 1;
+
+      // Optional. The entity type name prefixed with `@`.
+      // This field is required for annotated parts of the training phrase.
+      string entity_type = 2;
+
+      // Optional. The parameter name for the value extracted from the
+      // annotated part of the example.
+      // This field is required for annotated parts of the training phrase.
+      string alias = 3;
+
+      // Optional. Indicates whether the text was manually annotated.
+      // This field is set to true when the Dialogflow Console is used to
+      // manually annotate the part. When creating an annotated part with the
+      // API, you must set this to true.
+      bool user_defined = 4;
+    }
+
+    // Represents different types of training phrases.
+    enum Type {
+      // Not specified. This value should never be used.
+      TYPE_UNSPECIFIED = 0;
+
+      // Examples do not contain @-prefixed entity type names, but example parts
+      // can be annotated with entity types.
+      EXAMPLE = 1;
+
+      // Templates are not annotated with entity types, but they can contain
+      // @-prefixed entity type names as substrings.
+      // Template mode has been deprecated. Example mode is the only supported
+      // way to create new training phrases. If you have existing training
+      // phrases that you've created in template mode, those will continue to
+      // work.
+      TEMPLATE = 2 [deprecated = true];
+    }
+
+    // Output only. The unique identifier of this training phrase.
+    string name = 1;
+
+    // Required. The type of the training phrase.
+    Type type = 2;
+
+    // Required. The ordered list of training phrase parts.
+    // The parts are concatenated in order to form the training phrase.
+    //
+    // Note: The API does not automatically annotate training phrases like the
+    // Dialogflow Console does.
+    //
+    // Note: Do not forget to include whitespace at part boundaries,
+    // so the training phrase is well formatted when the parts are concatenated.
+    //
+    // If the training phrase does not need to be annotated with parameters,
+    // you just need a single part with only the [Part.text][google.cloud.dialogflow.v2.Intent.TrainingPhrase.Part.text] field set.
+    //
+    // If you want to annotate the training phrase, you must create multiple
+    // parts, where the fields of each part are populated in one of two ways:
+    //
+    // -   `Part.text` is set to a part of the phrase that has no parameters.
+    // -   `Part.text` is set to a part of the phrase that you want to annotate,
+    //     and the `entity_type`, `alias`, and `user_defined` fields are all
+    //     set.
+    repeated Part parts = 3;
+
+    // Optional. Indicates how many times this example was added to
+    // the intent. Each time a developer adds an existing sample by editing an
+    // intent or training, this counter is increased.
+    int32 times_added_count = 4;
+  }
+
+  // Represents intent parameters.
+  message Parameter {
+    // The unique identifier of this parameter.
+    string name = 1;
+
+    // Required. The name of the parameter.
+    string display_name = 2;
+
+    // Optional. The definition of the parameter value. It can be:
+    // - a constant string,
+    // - a parameter value defined as `$parameter_name`,
+    // - an original parameter value defined as `$parameter_name.original`,
+    // - a parameter value from some context defined as
+    //   `#context_name.parameter_name`.
+    string value = 3;
+
+    // Optional. The default value to use when the `value` yields an empty
+    // result.
+    // Default values can be extracted from contexts by using the following
+    // syntax: `#context_name.parameter_name`.
+    string default_value = 4;
+
+    // Optional. The name of the entity type, prefixed with `@`, that
+    // describes values of the parameter. If the parameter is
+    // required, this must be provided.
+    string entity_type_display_name = 5;
+
+    // Optional. Indicates whether the parameter is required. That is,
+    // whether the intent cannot be completed without collecting the parameter
+    // value.
+    bool mandatory = 6;
+
+    // Optional. The collection of prompts that the agent can present to the
+    // user in order to collect value for the parameter.
+    repeated string prompts = 7;
+
+    // Optional. Indicates whether the parameter represents a list of values.
+    bool is_list = 8;
+  }
+
+  // Corresponds to the `Response` field in the Dialogflow console.
+  message Message {
+    // The text response message.
+    message Text {
+      // Optional. The collection of the agent's responses.
+      repeated string text = 1;
+    }
+
+    // The image response message.
+    message Image {
+      // Optional. The public URI to an image file.
+      string image_uri = 1;
+
+      // Optional. A text description of the image to be used for accessibility,
+      // e.g., screen readers.
+      string accessibility_text = 2;
+    }
+
+    // The quick replies response message.
+    message QuickReplies {
+      // Optional. The title of the collection of quick replies.
+      string title = 1;
+
+      // Optional. The collection of quick replies.
+      repeated string quick_replies = 2;
+    }
+
+    // The card response message.
+    message Card {
+      // Optional. Contains information about a button.
+      message Button {
+        // Optional. The text to show on the button.
+        string text = 1;
+
+        // Optional. The text to send back to the Dialogflow API or a URI to
+        // open.
+        string postback = 2;
+      }
+
+      // Optional. The title of the card.
+      string title = 1;
+
+      // Optional. The subtitle of the card.
+      string subtitle = 2;
+
+      // Optional. The public URI to an image file for the card.
+      string image_uri = 3;
+
+      // Optional. The collection of card buttons.
+      repeated Button buttons = 4;
+    }
+
+    // The simple response message containing speech or text.
+    message SimpleResponse {
+      // One of text_to_speech or ssml must be provided. The plain text of the
+      // speech output. Mutually exclusive with ssml.
+      string text_to_speech = 1;
+
+      // One of text_to_speech or ssml must be provided. Structured spoken
+      // response to the user in the SSML format. Mutually exclusive with
+      // text_to_speech.
+      string ssml = 2;
+
+      // Optional. The text to display.
+      string display_text = 3;
+    }
+
+    // The collection of simple response candidates.
+    // This message in `QueryResult.fulfillment_messages` and
+    // `WebhookResponse.fulfillment_messages` should contain only one
+    // `SimpleResponse`.
+    message SimpleResponses {
+      // Required. The list of simple responses.
+      repeated SimpleResponse simple_responses = 1;
+    }
+
+    // The basic card message. Useful for displaying information.
+    message BasicCard {
+      // The button object that appears at the bottom of a card.
+      message Button {
+        // Opens the given URI.
+        message OpenUriAction {
+          // Required. The HTTP or HTTPS scheme URI.
+          string uri = 1;
+        }
+
+        // Required. The title of the button.
+        string title = 1;
+
+        // Required. Action to take when a user taps on the button.
+        OpenUriAction open_uri_action = 2;
+      }
+
+      // Optional. The title of the card.
+      string title = 1;
+
+      // Optional. The subtitle of the card.
+      string subtitle = 2;
+
+      // Required, unless image is present. The body text of the card.
+      string formatted_text = 3;
+
+      // Optional. The image for the card.
+      Image image = 4;
+
+      // Optional. The collection of card buttons.
+      repeated Button buttons = 5;
+    }
+
+    // The suggestion chip message that the user can tap to quickly post a reply
+    // to the conversation.
+    message Suggestion {
+      // Required. The text shown the in the suggestion chip.
+      string title = 1;
+    }
+
+    // The collection of suggestions.
+    message Suggestions {
+      // Required. The list of suggested replies.
+      repeated Suggestion suggestions = 1;
+    }
+
+    // The suggestion chip message that allows the user to jump out to the app
+    // or website associated with this agent.
+    message LinkOutSuggestion {
+      // Required. The name of the app or site this chip is linking to.
+      string destination_name = 1;
+
+      // Required. The URI of the app or site to open when the user taps the
+      // suggestion chip.
+      string uri = 2;
+    }
+
+    // The card for presenting a list of options to select from.
+    message ListSelect {
+      // An item in the list.
+      message Item {
+        // Required. Additional information about this option.
+        SelectItemInfo info = 1;
+
+        // Required. The title of the list item.
+        string title = 2;
+
+        // Optional. The main text describing the item.
+        string description = 3;
+
+        // Optional. The image to display.
+        Image image = 4;
+      }
+
+      // Optional. The overall title of the list.
+      string title = 1;
+
+      // Required. List items.
+      repeated Item items = 2;
+    }
+
+    // The card for presenting a carousel of options to select from.
+    message CarouselSelect {
+      // An item in the carousel.
+      message Item {
+        // Required. Additional info about the option item.
+        SelectItemInfo info = 1;
+
+        // Required. Title of the carousel item.
+        string title = 2;
+
+        // Optional. The body text of the card.
+        string description = 3;
+
+        // Optional. The image to display.
+        Image image = 4;
+      }
+
+      // Required. Carousel items.
+      repeated Item items = 1;
+    }
+
+    // Additional info about the select item for when it is triggered in a
+    // dialog.
+    message SelectItemInfo {
+      // Required. A unique key that will be sent back to the agent if this
+      // response is given.
+      string key = 1;
+
+      // Optional. A list of synonyms that can also be used to trigger this
+      // item in dialog.
+      repeated string synonyms = 2;
+    }
+
+    // Represents different platforms that a rich message can be intended for.
+    enum Platform {
+      // Not specified.
+      PLATFORM_UNSPECIFIED = 0;
+
+      // Facebook.
+      FACEBOOK = 1;
+
+      // Slack.
+      SLACK = 2;
+
+      // Telegram.
+      TELEGRAM = 3;
+
+      // Kik.
+      KIK = 4;
+
+      // Skype.
+      SKYPE = 5;
+
+      // Line.
+      LINE = 6;
+
+      // Viber.
+      VIBER = 7;
+
+      // Actions on Google.
+      // When using Actions on Google, you can choose one of the specific
+      // Intent.Message types that mention support for Actions on Google,
+      // or you can use the advanced Intent.Message.payload field.
+      // The payload field provides access to AoG features not available in the
+      // specific message types.
+      // If using the Intent.Message.payload field, it should have a structure
+      // similar to the JSON message shown here. For more information, see
+      // [Actions on Google Webhook
+      // Format](https://developers.google.com/actions/dialogflow/webhook)
+      // <pre>{
+      //   "expectUserResponse": true,
+      //   "isSsml": false,
+      //   "noInputPrompts": [],
+      //   "richResponse": {
+      //     "items": [
+      //       {
+      //         "simpleResponse": {
+      //           "displayText": "hi",
+      //           "textToSpeech": "hello"
+      //         }
+      //       }
+      //     ],
+      //     "suggestions": [
+      //       {
+      //         "title": "Say this"
+      //       },
+      //       {
+      //         "title": "or this"
+      //       }
+      //     ]
+      //   },
+      //   "systemIntent": {
+      //     "data": {
+      //       "@type": "type.googleapis.com/google.actions.v2.OptionValueSpec",
+      //       "listSelect": {
+      //         "items": [
+      //           {
+      //             "optionInfo": {
+      //               "key": "key1",
+      //               "synonyms": [
+      //                 "key one"
+      //               ]
+      //             },
+      //             "title": "must not be empty, but unique"
+      //           },
+      //           {
+      //             "optionInfo": {
+      //               "key": "key2",
+      //               "synonyms": [
+      //                 "key two"
+      //               ]
+      //             },
+      //             "title": "must not be empty, but unique"
+      //           }
+      //         ]
+      //       }
+      //     },
+      //     "intent": "actions.intent.OPTION"
+      //   }
+      // }</pre>
+      ACTIONS_ON_GOOGLE = 8;
+    }
+
+    // Required. The rich response message.
+    oneof message {
+      // The text response.
+      Text text = 1;
+
+      // The image response.
+      Image image = 2;
+
+      // The quick replies response.
+      QuickReplies quick_replies = 3;
+
+      // The card response.
+      Card card = 4;
+
+      // Returns a response containing a custom, platform-specific payload.
+      // See the Intent.Message.Platform type for a description of the
+      // structure that may be required for your platform.
+      google.protobuf.Struct payload = 5;
+
+      // The voice and text-only responses for Actions on Google.
+      SimpleResponses simple_responses = 7;
+
+      // The basic card response for Actions on Google.
+      BasicCard basic_card = 8;
+
+      // The suggestion chips for Actions on Google.
+      Suggestions suggestions = 9;
+
+      // The link out suggestion chip for Actions on Google.
+      LinkOutSuggestion link_out_suggestion = 10;
+
+      // The list card response for Actions on Google.
+      ListSelect list_select = 11;
+
+      // The carousel card response for Actions on Google.
+      CarouselSelect carousel_select = 12;
+    }
+
+    // Optional. The platform that this message is intended for.
+    Platform platform = 6;
+  }
+
+  // Represents a single followup intent in the chain.
+  message FollowupIntentInfo {
+    // The unique identifier of the followup intent.
+    // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
+    string followup_intent_name = 1;
+
+    // The unique identifier of the followup intent's parent.
+    // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
+    string parent_followup_intent_name = 2;
+  }
+
+  // Represents the different states that webhooks can be in.
+  enum WebhookState {
+    // Webhook is disabled in the agent and in the intent.
+    WEBHOOK_STATE_UNSPECIFIED = 0;
+
+    // Webhook is enabled in the agent and in the intent.
+    WEBHOOK_STATE_ENABLED = 1;
+
+    // Webhook is enabled in the agent and in the intent. Also, each slot
+    // filling prompt is forwarded to the webhook.
+    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2;
+  }
+
+  // The unique identifier of this intent.
+  // Required for [Intents.UpdateIntent][google.cloud.dialogflow.v2.Intents.UpdateIntent] and [Intents.BatchUpdateIntents][google.cloud.dialogflow.v2.Intents.BatchUpdateIntents]
+  // methods.
+  // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
+  string name = 1;
+
+  // Required. The name of this intent.
+  string display_name = 2;
+
+  // Optional. Indicates whether webhooks are enabled for the intent.
+  WebhookState webhook_state = 6;
+
+  // Optional. The priority of this intent. Higher numbers represent higher
+  // priorities. If this is zero or unspecified, we use the default
+  // priority 500000.
+  //
+  // Negative numbers mean that the intent is disabled.
+  int32 priority = 3;
+
+  // Optional. Indicates whether this is a fallback intent.
+  bool is_fallback = 4;
+
+  // Optional. Indicates whether Machine Learning is disabled for the intent.
+  // Note: If `ml_diabled` setting is set to true, then this intent is not
+  // taken into account during inference in `ML ONLY` match mode. Also,
+  // auto-markup in the UI is turned off.
+  bool ml_disabled = 19;
+
+  // Optional. The list of context names required for this intent to be
+  // triggered.
+  // Format: `projects/<Project ID>/agent/sessions/-/contexts/<Context ID>`.
+  repeated string input_context_names = 7;
+
+  // Optional. The collection of event names that trigger the intent.
+  // If the collection of input contexts is not empty, all of the contexts must
+  // be present in the active user session for an event to trigger this intent.
+  repeated string events = 8;
+
+  // Optional. The collection of examples that the agent is
+  // trained on.
+  repeated TrainingPhrase training_phrases = 9;
+
+  // Optional. The name of the action associated with the intent.
+  // Note: The action name must not contain whitespaces.
+  string action = 10;
+
+  // Optional. The collection of contexts that are activated when the intent
+  // is matched. Context messages in this collection should not set the
+  // parameters field. Setting the `lifespan_count` to 0 will reset the context
+  // when the intent is matched.
+  // Format: `projects/<Project ID>/agent/sessions/-/contexts/<Context ID>`.
+  repeated Context output_contexts = 11;
+
+  // Optional. Indicates whether to delete all contexts in the current
+  // session when this intent is matched.
+  bool reset_contexts = 12;
+
+  // Optional. The collection of parameters associated with the intent.
+  repeated Parameter parameters = 13;
+
+  // Optional. The collection of rich messages corresponding to the
+  // `Response` field in the Dialogflow console.
+  repeated Message messages = 14;
+
+  // Optional. The list of platforms for which the first response will be
+  // taken from among the messages assigned to the DEFAULT_PLATFORM.
+  repeated Message.Platform default_response_platforms = 15;
+
+  // Read-only. The unique identifier of the root intent in the chain of
+  // followup intents. It identifies the correct followup intents chain for
+  // this intent. We populate this field only in the output.
+  //
+  // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
+  string root_followup_intent_name = 16;
+
+  // Read-only after creation. The unique identifier of the parent intent in the
+  // chain of followup intents. You can set this field when creating an intent,
+  // for example with [CreateIntent][] or [BatchUpdateIntents][], in order to
+  // make this intent a followup intent.
+  //
+  // It identifies the parent followup intent.
+  // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
+  string parent_followup_intent_name = 17;
+
+  // Read-only. Information about all followup intents that have this intent as
+  // a direct or indirect parent. We populate this field only in the output.
+  repeated FollowupIntentInfo followup_intent_info = 18;
+}
+
+// The request message for [Intents.ListIntents][google.cloud.dialogflow.v2.Intents.ListIntents].
+message ListIntentsRequest {
+  // Required. The agent to list all intents from.
+  // Format: `projects/<Project ID>/agent`.
+  string parent = 1;
+
+  // Optional. The language to list training phrases, parameters and rich
+  // messages for. If not specified, the agent's default language is used.
+  // [Many
+  // languages](https://cloud.google.com/dialogflow-enterprise/docs/reference/language)
+  // are supported. Note: languages must be enabled in the agent before they can
+  // be used.
+  string language_code = 2;
+
+  // Optional. The resource view to apply to the returned intent.
+  IntentView intent_view = 3;
+
+  // Optional. The maximum number of items to return in a single page. By
+  // default 100 and at most 1000.
+  int32 page_size = 4;
+
+  // Optional. The next_page_token value returned from a previous list request.
+  string page_token = 5;
+}
+
+// The response message for [Intents.ListIntents][google.cloud.dialogflow.v2.Intents.ListIntents].
+message ListIntentsResponse {
+  // The list of agent intents. There will be a maximum number of items
+  // returned based on the page_size field in the request.
+  repeated Intent intents = 1;
+
+  // Token to retrieve the next page of results, or empty if there are no
+  // more results in the list.
+  string next_page_token = 2;
+}
+
+// The request message for [Intents.GetIntent][google.cloud.dialogflow.v2.Intents.GetIntent].
+message GetIntentRequest {
+  // Required. The name of the intent.
+  // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
+  string name = 1;
+
+  // Optional. The language to retrieve training phrases, parameters and rich
+  // messages for. If not specified, the agent's default language is used.
+  // [Many
+  // languages](https://cloud.google.com/dialogflow-enterprise/docs/reference/language)
+  // are supported. Note: languages must be enabled in the agent before they can
+  // be used.
+  string language_code = 2;
+
+  // Optional. The resource view to apply to the returned intent.
+  IntentView intent_view = 3;
+}
+
+// The request message for [Intents.CreateIntent][google.cloud.dialogflow.v2.Intents.CreateIntent].
+message CreateIntentRequest {
+  // Required. The agent to create a intent for.
+  // Format: `projects/<Project ID>/agent`.
+  string parent = 1;
+
+  // Required. The intent to create.
+  Intent intent = 2;
+
+  // Optional. The language of training phrases, parameters and rich messages
+  // defined in `intent`. If not specified, the agent's default language is
+  // used. [Many
+  // languages](https://cloud.google.com/dialogflow-enterprise/docs/reference/language)
+  // are supported. Note: languages must be enabled in the agent before they can
+  // be used.
+  string language_code = 3;
+
+  // Optional. The resource view to apply to the returned intent.
+  IntentView intent_view = 4;
+}
+
+// The request message for [Intents.UpdateIntent][google.cloud.dialogflow.v2.Intents.UpdateIntent].
+message UpdateIntentRequest {
+  // Required. The intent to update.
+  Intent intent = 1;
+
+  // Optional. The language of training phrases, parameters and rich messages
+  // defined in `intent`. If not specified, the agent's default language is
+  // used. [Many
+  // languages](https://cloud.google.com/dialogflow-enterprise/docs/reference/language)
+  // are supported. Note: languages must be enabled in the agent before they can
+  // be used.
+  string language_code = 2;
+
+  // Optional. The mask to control which fields get updated.
+  google.protobuf.FieldMask update_mask = 3;
+
+  // Optional. The resource view to apply to the returned intent.
+  IntentView intent_view = 4;
+}
+
+// The request message for [Intents.DeleteIntent][google.cloud.dialogflow.v2.Intents.DeleteIntent].
+message DeleteIntentRequest {
+  // Required. The name of the intent to delete. If this intent has direct or
+  // indirect followup intents, we also delete them.
+  // Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
+  string name = 1;
+}
+
+// The request message for [Intents.BatchUpdateIntents][google.cloud.dialogflow.v2.Intents.BatchUpdateIntents].
+message BatchUpdateIntentsRequest {
+  // Required. The name of the agent to update or create intents in.
+  // Format: `projects/<Project ID>/agent`.
+  string parent = 1;
+
+  // Required. The source of the intent batch.
+  oneof intent_batch {
+    // The URI to a Google Cloud Storage file containing intents to update or
+    // create. The file format can either be a serialized proto (of IntentBatch
+    // type) or JSON object. Note: The URI must start with "gs://".
+    string intent_batch_uri = 2;
+
+    // The collection of intents to update or create.
+    IntentBatch intent_batch_inline = 3;
+  }
+
+  // Optional. The language of training phrases, parameters and rich messages
+  // defined in `intents`. If not specified, the agent's default language is
+  // used. [Many
+  // languages](https://cloud.google.com/dialogflow-enterprise/docs/reference/language)
+  // are supported. Note: languages must be enabled in the agent before they can
+  // be used.
+  string language_code = 4;
+
+  // Optional. The mask to control which fields get updated.
+  google.protobuf.FieldMask update_mask = 5;
+
+  // Optional. The resource view to apply to the returned intent.
+  IntentView intent_view = 6;
+}
+
+// The response message for [Intents.BatchUpdateIntents][google.cloud.dialogflow.v2.Intents.BatchUpdateIntents].
+message BatchUpdateIntentsResponse {
+  // The collection of updated or created intents.
+  repeated Intent intents = 1;
+}
+
+// The request message for [Intents.BatchDeleteIntents][google.cloud.dialogflow.v2.Intents.BatchDeleteIntents].
+message BatchDeleteIntentsRequest {
+  // Required. The name of the agent to delete all entities types for. Format:
+  // `projects/<Project ID>/agent`.
+  string parent = 1;
+
+  // Required. The collection of intents to delete. Only intent `name` must be
+  // filled in.
+  repeated Intent intents = 2;
+}
+
+// This message is a wrapper around a collection of intents.
+message IntentBatch {
+  // A collection of intents.
+  repeated Intent intents = 1;
+}
+
+// Represents the options for views of an intent.
+// An intent can be a sizable object. Therefore, we provide a resource view that
+// does not return training phrases in the response by default.
+enum IntentView {
+  // Training phrases field is not populated in the response.
+  INTENT_VIEW_UNSPECIFIED = 0;
+
+  // All fields are populated.
+  INTENT_VIEW_FULL = 1;
+}