this@ClassName supported

idea/idea-analysis/src/org/jetbrains/kotlin/idea/search/usagesSearch/destructuringDeclarationUsages.kt

@@ -257,6 +257,12 @@ private class Processor(
                             return true
                         }
                     }
+
+                    is KtContainerNode -> {
+                        if (parent.node.elementType == KtNodeTypes.LABEL_QUALIFIER) {
+                            return true // this@ClassName - it will be handled anyway because members and extensions are processed with plain search
+                        }
+                    }
                 }
 
                 if (element.getStrictParentOfType<KtImportDirective>() != null) return true // ignore usage in import

idea/testData/findUsages/kotlin/conventions/components/dataClass.0.kt

@@ -2,7 +2,13 @@
 // OPTIONS: usages
 package pack
 
-data class A(val <caret>n: Int, val s: String, val o: Any)
+data class A(val <caret>n: Int, val s: String, val o: Any) {
+    fun f() {
+        "a".apply {
+            this@A.toString()
+        }
+    }
+}
 
 fun A.ext1() {
     val (x, y) = getThis()

idea/testData/findUsages/kotlin/conventions/components/dataClass.results.txt

@@ -1,5 +1,5 @@
-[dataClass.0.kt] Value read 16 val (x, y) = get(0)
+[dataClass.0.kt] Value read 14 val (x, y) = getThis()
-[dataClass.0.kt] Value read 8 val (x, y) = getThis()
+[dataClass.0.kt] Value read 22 val (x, y) = get(0)
 [dataClass.1.kt] Value read 4 for ((x, y, z) in arrayOf<A>()) {
 [dataClass.1.kt] Value read 8 val (x, y) = a
 [dataClass.2.kt] Function call 6 a.component1()