@Override
  public JobMasterClientContext build() {
    if (mMasterInquireClient == null) {
      mMasterInquireClient = MasterInquireClient.Factory.createForJobMaster(mContext.getConf());
    }
    return new JobMasterClientContext(mContext, mMasterInquireClient);
  }
@ Override public JobMasterClientContext build ( ) { if ( mMasterInquireClient == null ) { mMasterInquireClient = MasterInquireClient . Factory . createForJobMaster ( mContext . getConf ( ) ) ; } return new JobMasterClientContext ( mContext , mMasterInquireClient ) ; }
Builds the configuration, creating an instance of {@link MasterInquireClient} if none is
specified.

@return a {@link JobMasterClientContext}