HandleError is used to surface some errors, and hide others.

HandleTupleValidateError provide common routines for handling tuples validation error.

IsValidEncodedError returns whether the error code is a valid encoded error.

NewEncodedError returns the encoded error with the correct http status code etc.

NewInternalError returns an error that is decorated with a public-facing error message.

AuthorizationModelResolutionTooComplex is used to avoid stack overflows.

EncodedError allows customized error with code in string and specified http status field.