reflection.php
protected function isAbstractMethod($name)
    {
        $interface = new ReflectionClass($this->interface);
        if (! $interface->hasMethod($name)) {
            return false;
        }

        return $interface->getMethod($name)->isAbstract();
    }
protected function isAbstractMethod($name)
    {
        $interface = new ReflectionClass($this->interface);
        if (! $interface->hasMethod($name)) {
            return false;
        }

        return $interface->getMethod($name)->isAbstract();
    }
Checks whether a method is abstract or not.

@param string $name Method name.

@return bool true if method is abstract, else false