public static ConstantPropagateDefaultProc getDefaultProc() {
    return new ConstantPropagateDefaultProc();
  }
Factory method to get the ConstantPropagateDefaultProc class.

@return ConstantPropagateDefaultProc
ql/src/java/org/apache/hadoop/hive/ql/optimizer/ConstantPropagateProcFactory.java