createPropertySignature
abstract fun createPropertySignature(modifiers: ERROR CLASS: Symbol not found for js.array.ReadonlyArray<typescript/Modifier>??, name: PropertyName, questionToken: QuestionToken?, type: TypeNode?): PropertySignature(source)
abstract fun createPropertySignature(modifiers: ERROR CLASS: Symbol not found for js.array.ReadonlyArray<typescript/Modifier>??, name: String, questionToken: QuestionToken?, type: TypeNode?): PropertySignature(source)