Returns the extension name of the path of a URI, similar to the Unix extname command.
In the path, '/' is recognized as the directory separation character. Trailing directory separators are ignored.
The empty string is returned if the URIs path is empty or does not contain any path segments.
Returns the extension name of the path of a URI, similar to the Unix extname command. In the path, '/' is recognized as the directory separation character. Trailing directory separators are ignored. The empty string is returned if the URIs path is empty or does not contain any path segments.