function exampleMixin<T extends Constructor>(base: T) {
  return class ExampleMixinClass extends base {
    method_1(parameter: number): void {
      // code
    }
  }
}
	function exampleMixin<T extends Constructor>(base: T) {
	return class ExampleMixinClass extends base {
	method_1(parameter: number): void {
	// code
	}
	}
	}