When this char sequence starts with the given prefix and ends with the given suffix,
returns a new char sequence having both the given prefix and suffix removed.
Otherwise, returns a new char sequence with the same characters.
Removes from a string both the given prefix and suffix if and only if
it starts with the prefix and ends with the suffix.
Otherwise, returns this string unchanged.
When this char sequence starts with and ends with the given delimiter,
returns a new char sequence having this delimiter removed both from the start and end.
Otherwise, returns a new char sequence with the same characters.
Removes the given delimiter string from both the start and the end of this string
if and only if it starts with and ends with the delimiter.
Otherwise, returns this string unchanged.