public function mergeEnv()
    {
        $env = [];
        foreach ($this->installers as $installer) {
            $env = array_merge($env, $installer->getEnv());
        }

        return $env;
    }
public function mergeEnv()
    {
        $env = [];
        foreach ($this->installers as $installer) {
            $env = array_merge($env, $installer->getEnv());
        }

        return $env;
    }
public function mergeEnv ( ) { $ env = [ ] ; foreach ( $ this -> installers as $ installer ) { $ env = array_merge ( $ env , $ installer -> getEnv ( ) ) ; } return $ env ; }
Merge the environment variables from all installers.

@return array
Merge the environment variables from all installers .