code: protected function isAbstractMethod($name)
      {
          $interface = new ReflectionClass($this->interface);
          if (! $interface->hasMethod($name)) {
              return false;
          }
  
          return $interface->getMethod($name)->isAbstract();
      }
docs: Checks whether a method is abstract or not.
  
  @param string $name Method name.
  
  @return bool true if method is abstract, else false