Gets the ‘username’ component of uri's userinfo, which may contain
%-encoding, depending on the flags with which uri was created.
If uri was not created with G_URI_FLAGS_HAS_PASSWORD or
G_URI_FLAGS_HAS_AUTH_PARAMS, this is the same as glib.uri.Uri.getUserinfo.
Gets the ‘username’ component of uri's userinfo, which may contain %-encoding, depending on the flags with which uri was created. If uri was not created with G_URI_FLAGS_HAS_PASSWORD or G_URI_FLAGS_HAS_AUTH_PARAMS, this is the same as glib.uri.Uri.getUserinfo.