[AA LC Test] Cleanup resulting java dump

- Remove redundant spaces
- Add empty line at the end

analysis/symbol-light-classes/tests/org/jetbrains/kotlin/light/classes/symbol/base/AbstractSymbolLightClassesTestBase.kt

@@ -59,13 +59,21 @@ abstract class AbstractSymbolLightClassesTestBase(
         val project = ktFile.project
 
         ignoreExceptionIfIgnoreFirPresent(module) {
-            val actual = getRenderResult(ktFile, testDataPath, module, project)
+            val actual = getRenderResult(ktFile, testDataPath, module, project).cleanup()
             compareResults(testServices, actual)
             removeIgnoreFir(module)
             removeDuplicatedFirJava(testServices)
         }
     }
 
+    private fun String.cleanup(): String {
+        val lines = this.lines().mapTo(mutableListOf()) { it.ifBlank { "" } }
+        if (lines.last().isNotBlank()) {
+            lines += ""
+        }
+        return lines.joinToString("\n")
+    }
+
     protected abstract fun getRenderResult(
         ktFile: KtFile,
         testDataFile: Path,