This module is used for the Structs, Traits, and Enum character types.

• Structs: DecodeUtf16, DecodeUtf16Error, EscapeDefault, EscapeUnicode, ToLowercase, and ToUpperCase.
• Constants: Max and Replacement_Character.
• Functions: decode_utf16, from_digit, from_u32, and from_u32_unchecked.