src/Event/Event.php
public function setExitCode($exitCode)
    {
        \Assert\that($exitCode)->integer()->min(0);

        $this->exitCode = $exitCode;

        return $this;
    }
public function setExitCode($exitCode)
    {
        \Assert\that($exitCode)->integer()->min(0);

        $this->exitCode = $exitCode;

        return $this;
    }
Sets the exit code.

@param int $exitCode

@return $this