Default message is 'The given input is not supported by the server configuration.'.
Optional, more specific, message.
Optional error options.
The status code corresponding to this error class.
A unique URI identifying this error class.
Returns quads representing metadata relevant to this error.
Checks if the given error is an instance of this class.
An error thrown when incoming data is not supported. Probably because an AsyncHandler returns false on the canHandle call.