public function getPlugin($key) {
        return isset($this->plugins[$key]) ? $this->plugins[$key] : null;
    }
public function getPlugin($key) {
        return isset($this->plugins[$key]) ? $this->plugins[$key] : null;
    }
public function getPlugin ( $ key ) { return isset ( $ this -> plugins [ $ key ] ) ? $ this -> plugins [ $ key ] : null ; }
Get a plugin

@param mixed $key plugin index (0, 1, 2, etc) or string
@return Plugin
Get a plugin