withMonth method

@override Gregorian withMonth(int month)

Make a new date object with changed month

Original date object remains unchanged

This method is NOT safe

Throws DateException on problems

Note: For changing at once use copy() methods

Note: You can chain methods

Implementation

@override
Gregorian withMonth(int month) {
  if (month == this.month) {
    return this;
  } else {
    return Gregorian(
      year,
      month,
      day,
      hour,
      minute,
      second,
      millisecond,
    );
  }
}