code: public java.lang.String getJobName() {
      java.lang.Object ref = jobName_;
      if (ref instanceof java.lang.String) {
        return (java.lang.String) ref;
      } else {
        com.google.protobuf.ByteString bs = 
            (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        jobName_ = s;
        return s;
      }
    }
docs: <pre>
  The name of the job of which this server is a member.
  NOTE(mrry): The `cluster` field must contain a `JobDef` with a `name` field
  that matches this name.
  </pre>
  
  <code>optional string job_name = 2;</code>