protected function getDrushAliasKeys($realm)
    {
        $aliases = $this->loadDrushAliasesByRelam($realm);
        $alias_keys = array_keys($aliases);

        array_walk($alias_keys, function (&$key) use ($realm) {
            $key = "$realm.$key";
        });

        return $alias_keys;
    }
protected function getDrushAliasKeys($realm)
    {
        $aliases = $this->loadDrushAliasesByRelam($realm);
        $alias_keys = array_keys($aliases);

        array_walk($alias_keys, function (&$key) use ($realm) {
            $key = "$realm.$key";
        });

        return $alias_keys;
    }
protected function getDrushAliasKeys ( $ realm ) { $ aliases = $ this -> loadDrushAliasesByRelam ( $ realm ) ; $ alias_keys = array_keys ( $ aliases ) ; array_walk ( $ alias_keys , function ( & $ key ) use ( $ realm ) { $ key = "$realm.$key" ; } ) ; return $ alias_keys ; }
Get Drush alias keys.

@param string $realm
The environment realm.

@return array
An array of Drush alias keys.
Get Drush alias keys .