private function getInstaller()
    {
        return null !== $this->installer ? $this->installer : Installer::create($this->io, $this->composer);
    }
private function getInstaller()
    {
        return null !== $this->installer ? $this->installer : Installer::create($this->io, $this->composer);
    }
private function getInstaller ( ) { return null !== $ this -> installer ? $ this -> installer : Installer :: create ( $ this -> io , $ this -> composer ) ; }
Get the installer.

@return Installer
Get the installer .