public boolean equals(evaluate_args that) {
      if (that == null)
        return false;
      if (this == that)
        return true;

      boolean this_present_expression = true && this.isSetExpression();
      boolean that_present_expression = true && that.isSetExpression();
      if (this_present_expression || that_present_expression) {
        if (!(this_present_expression && that_present_expression))
          return false;
        if (!this.expression.equals(that.expression))
          return false;
      }

      boolean this_present_doTrunc = true;
      boolean that_present_doTrunc = true;
      if (this_present_doTrunc || that_present_doTrunc) {
        if (!(this_present_doTrunc && that_present_doTrunc))
          return false;
        if (this.doTrunc != that.doTrunc)
          return false;
      }

      return true;
    }
public boolean equals(evaluate_args that)