Unmask from the end. By default, the whole entity is masked. This field works in concert with leaveCharactersUnmasked. For example, leaveCharactersUnmasked is 3 and isUnmaskedFromEnd is true, then if the entity is India the masked entity/result is **dia.
Number of characters to leave unmasked. By default, the whole entity is masked. Note: Numbers greater than Number.MAX_SAFE_INTEGER will result in rounding issues.
Masking character. By default, the character is an asterisk (*)
Mask PII entities with the given masking character.