Can be parameter inspection #KT-10819 Fixed

compiler/frontend/src/org/jetbrains/kotlin/psi/psiUtil/ktPsiUtil.kt

@@ -394,17 +394,26 @@ fun KtLambdaArgument.getLambdaArgumentName(bindingContext: BindingContext): Name
 fun KtExpression.asAssignment(): KtBinaryExpression? =
         if (KtPsiUtil.isAssignment(this)) this as KtBinaryExpression else null
 
-fun KtDeclaration.visibilityModifier(): PsiElement? {
+private fun KtDeclaration.modifierFromTokenSet(set: TokenSet): PsiElement? {
     val modifierList = modifierList ?: return null
-    return KtTokens.VISIBILITY_MODIFIERS.types
-                   .asSequence()
-                   .map { modifierList.getModifier(it as KtModifierKeywordToken) }
-                   .firstOrNull { it != null }
+    return set.types
+            .asSequence()
+            .map { modifierList.getModifier(it as KtModifierKeywordToken) }
+            .firstOrNull { it != null }
+
 }
 
+fun KtDeclaration.visibilityModifier() = modifierFromTokenSet(KtTokens.VISIBILITY_MODIFIERS)
+
 fun KtDeclaration.visibilityModifierType(): KtModifierKeywordToken?
         = visibilityModifier()?.node?.elementType as KtModifierKeywordToken?
 
+private val MODALITY_MODIFIERS = TokenSet.create(
+        KtTokens.ABSTRACT_KEYWORD, KtTokens.FINAL_KEYWORD, KtTokens.SEALED_KEYWORD, KtTokens.OPEN_KEYWORD
+)
+
+fun KtDeclaration.modalityModifier() = modifierFromTokenSet(MODALITY_MODIFIERS)
+
 fun KtStringTemplateExpression.isPlain() = entries.all { it is KtLiteralStringTemplateEntry }
 
 val KtDeclaration.containingClassOrObject: KtClassOrObject?