src/Factory/GeneratorFactory.php
public function fetch($name)
    {
        $generator = false;
        if (array_key_exists($name, $this->generators)) {
            $generator = $this->generators[$name];
        }
        return $generator;
    }
public function fetch($name)
    {
        $generator = false;
        if (array_key_exists($name, $this->generators)) {
            $generator = $this->generators[$name];
        }
        return $generator;
    }
Fetches appropriate generator

@param string $name

@return GeneratorInterface|false the required generator or false if none.