parseRelative
Parses @uri_ref according to @flags and, if it is a #relative-and-absolute-uris, resolves it relative to @base_uri. If the result is not a valid absolute URI, it will be discarded, and an error returned.
Return
a new #GUri, or NULL on error.
Since
2.66
Parameters
uriRef
a string representing a relative or absolute URI
flags
flags describing how to parse @uri_ref