src/Guzzle/Service/Description/ServiceDescription.php
public function addOperation(OperationInterface $operation)
    {
        $this->operations[$operation->getName()] = $operation->setServiceDescription($this);

        return $this;
    }
public function addOperation(OperationInterface $operation)
    {
        $this->operations[$operation->getName()] = $operation->setServiceDescription($this);

        return $this;
    }
public function addOperation ( OperationInterface $ operation ) { $ this -> operations [ $ operation -> getName ( ) ] = $ operation -> setServiceDescription ( $ this ) ; return $ this ; }
Add a operation to the service description

@param OperationInterface $operation Operation to add

@return self
Add a operation to the service description