diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/IndexPatternBuilderAdapter.kt b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/IndexPatternBuilderAdapter.kt
new file mode 100644
index 00000000000..795a1252aae
--- /dev/null
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/IndexPatternBuilderAdapter.kt
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.search
+
+import com.intellij.psi.impl.search.IndexPatternBuilder
+import com.intellij.psi.tree.IElementType
+import org.jetbrains.kotlin.lexer.KtTokens
+
+abstract class IndexPatternBuilderAdapter : IndexPatternBuilder {
+    override fun getCommentStartDelta(tokenType: IElementType, tokenText: CharSequence): Int {
+        return when (tokenType) {
+            KtTokens.EOL_COMMENT -> 2
+            KtTokens.BLOCK_COMMENT -> 2
+            KtTokens.DOC_COMMENT -> 3
+            else -> 0
+        }
+    }
+
+    override fun getCharsAllowedInContinuationPrefix(tokenType: IElementType): String {
+        return when (tokenType) {
+            KtTokens.BLOCK_COMMENT -> "*"
+            KtTokens.DOC_COMMENT -> "*"
+            else -> ""
+        }
+    }
+}
\ No newline at end of file
diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/IndexPatternBuilderAdapter.kt.182 b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/IndexPatternBuilderAdapter.kt.182
new file mode 100644
index 00000000000..183782c8191
--- /dev/null
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/IndexPatternBuilderAdapter.kt.182
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.search
+
+import com.intellij.psi.impl.search.IndexPatternBuilder
+import com.intellij.psi.tree.IElementType
+import org.jetbrains.kotlin.lexer.KtTokens
+
+abstract class IndexPatternBuilderAdapter : IndexPatternBuilder {
+}
\ No newline at end of file
diff --git a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/KotlinIndexPatternBuilder.kt b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/KotlinIndexPatternBuilder.kt
index 4982881fb37..257d89d7b0e 100644
--- a/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/KotlinIndexPatternBuilder.kt
+++ b/idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/KotlinIndexPatternBuilder.kt
@@ -26,7 +26,7 @@ import org.jetbrains.kotlin.lexer.KotlinLexer
 import org.jetbrains.kotlin.lexer.KtTokens
 import org.jetbrains.kotlin.psi.KtFile
 
-class KotlinIndexPatternBuilder: IndexPatternBuilder {
+class KotlinIndexPatternBuilder: IndexPatternBuilderAdapter() {
     private val TODO_COMMENT_TOKENS = TokenSet.orSet(KtTokens.COMMENTS, TokenSet.create(KDocTokens.KDOC))
 
     override fun getCommentTokenSet(file: PsiFile): TokenSet? {
@@ -43,21 +43,4 @@ class KotlinIndexPatternBuilder: IndexPatternBuilder {
         KtTokens.BLOCK_COMMENT -> "*/".length
         else -> 0
     }
-
-    override fun getCommentStartDelta(tokenType: IElementType, tokenText: CharSequence): Int {
-        return when (tokenType) {
-            KtTokens.EOL_COMMENT -> 2
-            KtTokens.BLOCK_COMMENT -> 2
-            KtTokens.DOC_COMMENT -> 3
-            else -> 0
-        }
-    }
-
-    override fun getCharsAllowedInContinuationPrefix(tokenType: IElementType): String {
-        return when (tokenType) {
-            KtTokens.BLOCK_COMMENT -> "*"
-            KtTokens.DOC_COMMENT -> "*"
-            else -> ""
-        }
-    }
 }