diff --git a/platform/platform-impl/src/com/intellij/codeInsight/inline/completion/logs/InlineCompletionFilteringEventListener.kt b/platform/platform-impl/src/com/intellij/codeInsight/inline/completion/logs/InlineCompletionFilteringEventListener.kt
index cc0f7a4501b2..3280646f2a3c 100644
--- a/platform/platform-impl/src/com/intellij/codeInsight/inline/completion/logs/InlineCompletionFilteringEventListener.kt
+++ b/platform/platform-impl/src/com/intellij/codeInsight/inline/completion/logs/InlineCompletionFilteringEventListener.kt
@@ -5,13 +5,18 @@ import com.intellij.codeInsight.inline.completion.InlineCompletionEventAdapter
 import com.intellij.codeInsight.inline.completion.InlineCompletionEventType
 import java.util.concurrent.atomic.AtomicBoolean
 
+/**
+ * If a request is applicable corresponding to [isApplicable], then everything works as usual.
+ *
+ * If a request is not applicable, the listener doesn't call any methods on all the events connected to the request.
+ */
 internal abstract class InlineCompletionFilteringEventListener : InlineCompletionEventAdapter {
 
   private val isApplicable = AtomicBoolean(true)
 
   protected abstract fun isApplicable(requestEvent: InlineCompletionEventType.Request): Boolean
 
-  override fun on(event: InlineCompletionEventType) {
+  final override fun on(event: InlineCompletionEventType) {
     if (event is InlineCompletionEventType.Request) {
       isApplicable.set(isApplicable(event))
     }