And one more split test

idea/testData/findUsages/kotlin/conventions/components/dataClass.log

@@ -1,31 +1,17 @@
 Searched inheritors of pack.A
-Searched inheritors of pack.B
-Searched inheritors of pack.C
 Searched references to JavaClass.getA() in Kotlin files
 Searched references to a in Kotlin files
-Searched references to a in Kotlin files
-Searched references to a1 in Kotlin files
 Searched references to f() in Kotlin files
 Searched references to g() in Kotlin files
 Searched references to h() in Kotlin files
 Searched references to list in Kotlin files
 Searched references to listOfA() in Kotlin files
 Searched references to pack.A
-Searched references to pack.B
-Searched references to pack.C
-Searched references to pack.C.component1() in Kotlin files
-Searched references to parameter a in B() in Kotlin files
 Searched references to parameter a in null in Kotlin files
-Searched references to parameter b in pack.f() in Kotlin files
-Searched references to parameter c in pack.f() in Kotlin files
 Used plain search in LocalSearchScope:
     CLASS:A
     FUN:ext1
     FUN:ext1
     FUN:x
     KtWhenEntry "else"
-    KtWhenEntry "is A"
-Used plain search in LocalSearchScope:
-    CLASS:B
-Used plain search in LocalSearchScope:
-    CLASS:C
+    KtWhenEntry "is A"

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

@@ -14,6 +14,4 @@
 [dataClass.2.kt] Value read 5 a.n
 [dataClass.2.kt] Value read 53 val (x, y) = o
 [dataClass.2.kt] Value read 8 val (x, y, z) = a
-[dataClass.2.kt] Value read 9 val (x1, y1, z1) = f()
-[dataClass.3.kt] Value read 12 val (x, y, z) = a
-[dataClass.3.kt] Value read 15 val (x1, y1, z1) = a1
+[dataClass.2.kt] Value read 9 val (x1, y1, z1) = f()

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

@@ -1,5 +1,7 @@
-package pack
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtParameter
+// OPTIONS: usages
 
+data class A(val <caret>x: Int, val y: Int, val z: String)
 data class B(val a: A, val n: Int)
 
 class C {

idea/testData/findUsages/kotlin/conventions/components/dataClassInsideDataClass.log

@@ -0,0 +1,18 @@
+Searched inheritors of A
+Searched inheritors of B
+Searched inheritors of C
+Searched references to A
+Searched references to B
+Searched references to C
+Searched references to C.component1() in Kotlin files
+Searched references to a in Kotlin files
+Searched references to a1 in Kotlin files
+Searched references to parameter a in B() in Kotlin files
+Searched references to parameter b in f() in Kotlin files
+Searched references to parameter c in f() in Kotlin files
+Used plain search in LocalSearchScope:
+    CLASS:A
+Used plain search in LocalSearchScope:
+    CLASS:B
+Used plain search in LocalSearchScope:
+    CLASS:C

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

@@ -0,0 +1,2 @@
+Value read 14 val (x, y, z) = a
+Value read 17 val (x1, y1, z1) = a1

idea/tests/org/jetbrains/kotlin/findUsages/FindUsagesTestGenerated.java

@@ -200,6 +200,12 @@ public class FindUsagesTestGenerated extends AbstractFindUsagesTest {
                     doTest(fileName);
                 }
 
+                @TestMetadata("dataClassInsideDataClass.0.kt")
+                public void testDataClassInsideDataClass() throws Exception {
+                    String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/conventions/components/dataClassInsideDataClass.0.kt");
+                    doTest(fileName);
+                }
+
                 @TestMetadata("extensionComponentFun.0.kt")
                 public void testExtensionComponentFun() throws Exception {
                     String fileName = KotlinTestUtils.navigationMetadata("idea/testData/findUsages/kotlin/conventions/components/extensionComponentFun.0.kt");