Inject/Injector.php
public function getData($key){
        if(isset($this->data[$key])){
            return $this->data[$key];
        }
        throw new InjectorException("data $key not found");
    }
public function getData($key){
        if(isset($this->data[$key])){
            return $this->data[$key];
        }
        throw new InjectorException("data $key not found");
    }
get an instantiated object mapped
@param $key
@return mixed
@throws InjectorException