Month and day start at 1. Month must be >= 1 and <= 12. The return value is 0-indexed, that is Jan 1 is day 0. Day may be negative or larger than the

Allocates & fills one array, which contains: - the argv array with all the pointers into later offsets of the array, at the front - the string argumen

Return a span of bytes past the end of this ByteBuffer for writing. Ensures that the required space is available.