createArrowFunction
abstract fun createArrowFunction(modifiers: ERROR CLASS: Symbol not found for js.array.ReadonlyArray<typescript/Modifier>??, typeParameters: ERROR CLASS: Symbol not found for js.array.ReadonlyArray<typescript/TypeParameterDeclaration>??, parameters: ERROR CLASS: Symbol not found for js.array.ReadonlyArray<typescript/ParameterDeclaration>, type: TypeNode?, equalsGreaterThanToken: EqualsGreaterThanToken?, body: ConciseBody): ArrowFunction(source)