true if this path has a parent directory path, else returns false.
Remarks
Root directories representing a drive, like C: or D: don't have a parent directory path.
Relative path like ".\" or "..\" don't have a parent directory path.
Notice that a file path necessarily has a parent directory path.
Requirements
Target Platforms: Windows 11, 10, 8, 7 and Linux, MacOS with net8.0, net7.0 or net6.0 installed
