public function getRequiredVariables() {
	    $variables = array();
	    foreach ($this->inParameters as $param) {
	        if ($param instanceof tao_models_classes_service_VariableParameter) {
	            $variables[] = $param->getVariable();
	        }
	    }
	    return $variables;
	}
public function getRequiredVariables() {
	    $variables = array();
	    foreach ($this->inParameters as $param) {
	        if ($param instanceof tao_models_classes_service_VariableParameter) {
	            $variables[] = $param->getVariable();
	        }
	    }
	    return $variables;
	}
public function getRequiredVariables ( ) { $ variables = array ( ) ; foreach ( $ this -> inParameters as $ param ) { if ( $ param instanceof tao_models_classes_service_VariableParameter ) { $ variables [ ] = $ param -> getVariable ( ) ; } } return $ variables ; }
Gets the variables expected to be present to call this service

@return array:
Gets the variables expected to be present to call this service