public JobRunAsUser withPosix(PosixUser posix) {
        setPosix(posix);
        return this;
    }
<p>
The user and group that the jobs in the queue run as.
</p>

@param posix
       The user and group that the jobs in the queue run as.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-deadline/src/main/java/com/amazonaws/services/deadline/model/JobRunAsUser.java