code: public function getConfigBE()
  	{
  		$list = [];
  
  		foreach( $this->beConfig as $key => $config ) {
  			$list[$key] = new \Aimeos\MW\Criteria\Attribute\Standard( $config );
  		}
  
  		return $list;
  	}
docs: Returns the configuration attribute definitions of the provider to generate a list of available fields and
  rules for the value of each field in the administration interface.
  
  @return array List of attribute definitions implementing \Aimeos\MW\Common\Critera\Attribute\Iface