1 files changed, 7 insertions, 7 deletions
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/api/FileContents.java b/src/main/java/com/puppycrawl/tools/checkstyle/api/FileContents.java
index ca9a5b363..6aa0ad823 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/api/FileContents.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/api/FileContents.java
@@ -23,12 +23,12 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
+import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.regex.Pattern;
 
-import com.google.common.collect.ImmutableMap;
 import com.puppycrawl.tools.checkstyle.grammars.CommentListener;
 import com.puppycrawl.tools.checkstyle.utils.CommonUtils;
 
@@ -165,7 +165,7 @@ public final class FileContents implements CommentListener {
      * @deprecated Use {@link #getSingleLineComments()} instead.
      */
     @Deprecated
-    public ImmutableMap<Integer, TextBlock> getCppComments() {
+    public Map<Integer, TextBlock> getCppComments() {
         return getSingleLineComments();
     }
 
@@ -174,8 +174,8 @@ public final class FileContents implements CommentListener {
      * the value is the comment {@link TextBlock} at the line.
      * @return the Map of comments
      */
-    public ImmutableMap<Integer, TextBlock> getSingleLineComments() {
-        return ImmutableMap.copyOf(cppComments);
+    public Map<Integer, TextBlock> getSingleLineComments() {
+        return Collections.unmodifiableMap(cppComments);
     }
 
     /**
@@ -202,7 +202,7 @@ public final class FileContents implements CommentListener {
      */
     // -@cs[AbbreviationAsWordInName] Can't change yet since class is API.
     @Deprecated
-    public ImmutableMap<Integer, List<TextBlock>> getCComments() {
+    public Map<Integer, List<TextBlock>> getCComments() {
         return getBlockComments();
     }
 
@@ -212,8 +212,8 @@ public final class FileContents implements CommentListener {
      * that start at that line.
      * @return the map of comments
      */
-    public ImmutableMap<Integer, List<TextBlock>> getBlockComments() {
-        return ImmutableMap.copyOf(clangComments);
+    public Map<Integer, List<TextBlock>> getBlockComments() {
+        return Collections.unmodifiableMap(clangComments);
     }
 
     /**