'Get the default redirect URI for the client.
:param client_id: Unicode client identifier
:param request: The HTTP Request (oauthlib.common.Request)
:rtype: The default redirect URI for the client
Method is used by:
- Authorization Code Grant
- Implicit Grant'

def get_default_redirect_uri(self, client_id, request, *args, **kwargs):

    raise NotImplementedError(u'Subclasses    must    implement    this    method.')
