private static ArrayList<Method> getImplementedMethods(
      @Nullable PhpClass phpClass, @NotNull Method method, ArrayList<Method> implementedMethods) {
    if (phpClass == null) {
      return implementedMethods;
    }

    Method[] methods = phpClass.getOwnMethods();
    for (Method ownMethod : methods) {
      if (PhpLangUtil.equalsMethodNames(ownMethod.getName(), method.getName())) {
        implementedMethods.add(ownMethod);
      }
    }

    for (PhpClass interfaceClass : phpClass.getImplementedInterfaces()) {
      getImplementedMethods(interfaceClass, method, implementedMethods);
    }

    getImplementedMethods(phpClass.getSuperClass(), method, implementedMethods);

    return implementedMethods;
  }