src/Plum/Plum.php
public function getDeployer($deployer)
    {
        if (false === isset($this->deployers[$deployer])) {
            throw new \InvalidArgumentException(sprintf('The deployer "%s" is not registered.', $deployer));
        }

        return $this->deployers[$deployer];
    }
public function getDeployer($deployer)
    {
        if (false === isset($this->deployers[$deployer])) {
            throw new \InvalidArgumentException(sprintf('The deployer "%s" is not registered.', $deployer));
        }

        return $this->deployers[$deployer];
    }
Returns a deployer

@param string $deployer The deployer name

@return \Plum\Deployer\DeployerInterface