diff --git a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/idea/tcs/extras/projectArtifactClasspathExtras.kt b/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/idea/tcs/extras/projectArtifactClasspathExtras.kt
index 6888fe5b154..8e7a7df4479 100644
--- a/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/idea/tcs/extras/projectArtifactClasspathExtras.kt
+++ b/libraries/tools/kotlin-gradle-plugin-idea/src/main/kotlin/org/jetbrains/kotlin/gradle/idea/tcs/extras/projectArtifactClasspathExtras.kt
@@ -12,4 +12,12 @@ import org.jetbrains.kotlin.tooling.core.lazyProperty
 
 val projectArtifactsClasspathKey = extrasKeyOf<IdeaKotlinClasspath>("artifactsClasspath")
 
+/**
+ * Classpath used inside IntelliJ/Kotlin to figure out the set of SourceSets that this dependency represents.
+ * The files contained here are the actual dependencies for a compilation.
+ * The dependency project's import will know about which SourceSets produced these artifacts which enables
+ * IntelliJ/Kotlin to resolve the SourceSets it needs to depend on.
+ *
+ * Note: Plugins like Android might use custom/different approaches on how to resolve this [IdeaKotlinProjectArtifactDependency]
+ */
 val IdeaKotlinProjectArtifactDependency.artifactsClasspath by projectArtifactsClasspathKey.lazyProperty { IdeaKotlinClasspath() }
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