diff --git a/libraries/tools/kotlin-gradle-plugin/api/kotlin-gradle-plugin.api b/libraries/tools/kotlin-gradle-plugin/api/kotlin-gradle-plugin.api
index 0d686f78b3d..84266b714f8 100644
--- a/libraries/tools/kotlin-gradle-plugin/api/kotlin-gradle-plugin.api
+++ b/libraries/tools/kotlin-gradle-plugin/api/kotlin-gradle-plugin.api
@@ -1,3 +1,12 @@
+public abstract interface class org/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver {
+	public abstract fun resolve (Lorg/jetbrains/kotlin/gradle/plugin/KotlinSourceSet;Ljava/util/Set;)V
+}
+
+public final class org/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver$Empty : org/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver {
+	public static final field INSTANCE Lorg/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver$Empty;
+	public fun resolve (Lorg/jetbrains/kotlin/gradle/plugin/KotlinSourceSet;Ljava/util/Set;)V
+}
+
 public abstract interface class org/jetbrains/kotlin/gradle/plugin/ide/IdeDependencyEffect {
 	public abstract fun invoke (Lorg/jetbrains/kotlin/gradle/plugin/KotlinSourceSet;Ljava/util/Set;)V
 }
diff --git a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver.kt b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver.kt
index ca369d4e6b1..f128ed85329 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/common/kotlin/org/jetbrains/kotlin/gradle/plugin/ide/IdeAdditionalArtifactResolver.kt
@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.gradle.plugin.ide
 
+import org.jetbrains.kotlin.gradle.ExternalKotlinTargetApi
 import org.jetbrains.kotlin.gradle.idea.tcs.IdeaKotlinBinaryDependency
 import org.jetbrains.kotlin.gradle.idea.tcs.IdeaKotlinDependency
 import org.jetbrains.kotlin.gradle.idea.tcs.IdeaKotlinResolvedBinaryDependency
@@ -14,10 +15,22 @@ import org.jetbrains.kotlin.gradle.plugin.KotlinSourceSet
 import org.jetbrains.kotlin.gradle.plugin.ide.IdeDependencyResolver.Companion.DOCUMENTATION_BINARY_TYPE
 import org.jetbrains.kotlin.gradle.plugin.ide.IdeDependencyResolver.Companion.SOURCES_BINARY_TYPE
 
-
+/**
+ * Resolver for attaching additional artifacts to already resolved dependencies.
+ * #### Example
+ * ```
+ * val sourcesJarResolver = IdeAdditionalArtifactResolver { sourceSet, dependencies ->
+ *     dependencies.forEach { dependency ->
+ *         dependency.sourcesClasspath.add(findMySourcesJarFile(dependency))
+ *     }
+ * }
+ * ```
+ */
+@ExternalKotlinTargetApi
 fun interface IdeAdditionalArtifactResolver {
     fun resolve(sourceSet: KotlinSourceSet, dependencies: Set<IdeaKotlinDependency>)
 
+    @ExternalKotlinTargetApi
     object Empty : IdeAdditionalArtifactResolver {
         override fun resolve(sourceSet: KotlinSourceSet, dependencies: Set<IdeaKotlinDependency>) = Unit
     }
@@ -41,7 +54,7 @@ internal fun IdeAdditionalArtifactResolver(resolvers: Iterable<IdeAdditionalArti
  * Dependencies from the [IdeDependencyResolver] need to resolve sources and javadoc using
  * the [SOURCES_BINARY_TYPE] or [DOCUMENTATION_BINARY_TYPE]
  */
-fun IdeAdditionalArtifactResolver(resolver: IdeDependencyResolver) = IdeAdditionalArtifactResolver { sourceSet, dependencies ->
+internal fun IdeAdditionalArtifactResolver(resolver: IdeDependencyResolver) = IdeAdditionalArtifactResolver { sourceSet, dependencies ->
     /*
     Group already resolved dependencies by their coordinates (ignoring sourceSetName, since -sources.jar are not published
     on a "per source set" level.)
@@ -71,4 +84,4 @@ fun IdeAdditionalArtifactResolver(resolver: IdeDependencyResolver) = IdeAddition
 }
 
 
-fun IdeDependencyResolver.asAdditionalArtifactResolver() = IdeAdditionalArtifactResolver(this)
\ No newline at end of file
+internal fun IdeDependencyResolver.asAdditionalArtifactResolver() = IdeAdditionalArtifactResolver(this)
\ No newline at end of file