diff --git a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightMethods.kt b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightMethods.kt
index 94b98c221ff..949e3ae39ce 100644
--- a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightMethods.kt
+++ b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightMethods.kt
@@ -62,7 +62,7 @@ internal abstract class KtUltraLightMethod(
                 override fun getParent() = this@KtUltraLightMethod
                 override fun getContainingFile() = this@KtUltraLightMethod.containingFile
             }
-        computeDescriptor()?.let {
+        methodDescriptor?.let {
             for (ex in FunctionCodegen.getThrownExceptions(it)) {
                 val psiClassType = ex.defaultType.asPsiType(support, TypeMappingMode.DEFAULT, list) as? PsiClassType ?: continue
                 list.addReference(psiClassType)
@@ -92,10 +92,10 @@ internal abstract class KtUltraLightMethod(
 
     override fun getThrowsList(): PsiReferenceList = _throwsList
 
-    abstract fun computeDescriptor(): FunctionDescriptor?
+    abstract val methodDescriptor: FunctionDescriptor?
 
     private val lazyTypeErasure = lazyPub {
-        computeDescriptor()
+        methodDescriptor
             ?.getSpecialSignatureInfo()
             ?.isObjectReplacedWithTypeParameter
             ?: false
@@ -139,11 +139,11 @@ internal class KtUltraLightMethodForSourceDeclaration(
         else LightTypeParameterListBuilder(manager, language)
     }
 
-    override fun computeDescriptor() = kotlinOrigin?.resolve() as? FunctionDescriptor
+    override val methodDescriptor = kotlinOrigin?.resolve() as? FunctionDescriptor
 }
 
 internal class KtUltraLightMethodForDescriptor(
-    private val descriptor: FunctionDescriptor,
+    override val methodDescriptor: FunctionDescriptor,
     delegate: LightMethodBuilder,
     lightMemberOrigin: LightMemberOrigin?,
     support: KtUltraLightSupport,
@@ -154,14 +154,11 @@ internal class KtUltraLightMethodForDescriptor(
     support,
     containingClass
 ) {
-
-    override fun buildTypeParameterList() = buildTypeParameterList(descriptor, this, support)
-
-    override fun computeDescriptor() = descriptor
+    override fun buildTypeParameterList() = buildTypeParameterList(methodDescriptor, this, support)
 
     override val kotlinTypeForNullabilityAnnotation: KotlinType?
-        get() = descriptor.returnType
+        get() = methodDescriptor.returnType
 
     override val givenAnnotations: List<KtLightAbstractAnnotation>
-        get() = descriptor.obtainLightAnnotations(support, this)
+        get() = methodDescriptor.obtainLightAnnotations(support, this)
 }
\ No newline at end of file
diff --git a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightParameters.kt b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightParameters.kt
index 703d4308475..481c847a7be 100644
--- a/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightParameters.kt
+++ b/compiler/light-classes/src/org/jetbrains/kotlin/asJava/classes/ultraLightParameters.kt
@@ -69,7 +69,7 @@ internal abstract class KtUltraLightParameter(
     name: String,
     override val kotlinOrigin: KtParameter?,
     protected val support: KtUltraLightSupport,
-    method: KtLightMethod
+    method: KtUltraLightMethod
 ) : org.jetbrains.kotlin.asJava.elements.LightParameter(
     name,
     PsiType.NULL,
@@ -92,7 +92,7 @@ internal abstract class KtUltraLightParameter(
     override fun isValid() = parent.isValid
 
     protected abstract val kotlinType: KotlinType?
-    protected abstract fun computeContainingDescriptor(): CallableDescriptor?
+    protected abstract val containingDescriptor: CallableDescriptor?
 
     override val kotlinTypeForNullabilityAnnotation: KotlinType?
         get() {
@@ -114,12 +114,12 @@ internal abstract class KtUltraLightParameter(
         if (kotlinType.isSuspendFunctionType) {
             kotlinType.asPsiType(support, TypeMappingMode.DEFAULT, this)
         } else {
-            val containingDescriptor = computeContainingDescriptor() ?: return@lazyPub PsiType.NULL
+            val containingDescriptor = containingDescriptor ?: return@lazyPub PsiType.NULL
             val mappedType = support.mapType(this) { typeMapper, sw ->
                 typeMapper.writeParameterType(sw, kotlinType, containingDescriptor)
             }
 
-            if (method is KtUltraLightMethod && method.checkNeedToErasureParametersTypes)
+            if (method.checkNeedToErasureParametersTypes)
                 TypeConversionUtil.erasure(mappedType)
             else mappedType
         }
@@ -142,17 +142,17 @@ internal abstract class KtAbstractUltraLightParameterForDeclaration(
     name: String,
     kotlinOrigin: KtParameter?,
     support: KtUltraLightSupport,
-    method: KtLightMethod,
+    method: KtUltraLightMethod,
     protected val containingDeclaration: KtCallableDeclaration
 ) : KtUltraLightParameter(name, kotlinOrigin, support, method) {
-    override fun computeContainingDescriptor() = containingDeclaration.resolve() as? CallableMemberDescriptor
+    override val containingDescriptor: CallableDescriptor? = containingDeclaration.resolve() as? CallableMemberDescriptor
 }
 
 internal class KtUltraLightParameterForSource(
     name: String,
     override val kotlinOrigin: KtParameter,
     support: KtUltraLightSupport,
-    method: KtLightMethod,
+    method: KtUltraLightMethod,
     containingDeclaration: KtCallableDeclaration
 ) : KtAbstractUltraLightParameterForDeclaration(name, kotlinOrigin, support, method, containingDeclaration) {
 
@@ -173,7 +173,7 @@ internal class KtUltraLightParameterForSetterParameter(
     // KtProperty or KtParameter from primary constructor
     private val property: KtDeclaration,
     support: KtUltraLightSupport,
-    method: KtLightMethod,
+    method: KtUltraLightMethod,
     containingDeclaration: KtCallableDeclaration
 ) : KtAbstractUltraLightParameterForDeclaration(name, null, support, method, containingDeclaration) {
 
@@ -185,18 +185,18 @@ internal class KtUltraLightParameterForSetterParameter(
 internal class KtUltraLightReceiverParameter(
     containingDeclaration: KtCallableDeclaration,
     support: KtUltraLightSupport,
-    method: KtLightMethod
+    method: KtUltraLightMethod
 ) : KtAbstractUltraLightParameterForDeclaration("\$self", null, support, method, containingDeclaration) {
 
     override fun isVarArgs(): Boolean = false
 
-    override val kotlinType: KotlinType? by lazyPub { computeContainingDescriptor()?.extensionReceiverParameter?.type }
+    override val kotlinType: KotlinType? by lazyPub { containingDescriptor?.extensionReceiverParameter?.type }
 }
 
 internal class KtUltraLightParameterForDescriptor(
     private val descriptor: ParameterDescriptor,
     support: KtUltraLightSupport,
-    method: KtLightMethod
+    method: KtUltraLightMethod
 ) : KtUltraLightParameter(
     if (descriptor.name.isSpecial) "\$self" else descriptor.name.identifier,
     null, support, method
@@ -204,7 +204,7 @@ internal class KtUltraLightParameterForDescriptor(
     override val kotlinType: KotlinType?
         get() = descriptor.type
 
-    override fun computeContainingDescriptor() = descriptor.containingDeclaration as? CallableMemberDescriptor
+    override val containingDescriptor: CallableDescriptor? = descriptor.containingDeclaration as? CallableMemberDescriptor
 
     override fun isVarArgs() = (descriptor as? ValueParameterDescriptor)?.varargElementType != null