'Runs anything that needs to occur prior to calling the method handler.'

def initial(self, request, *args, **kwargs):

    self.format_kwarg = self.get_format_suffix(**kwargs)
    neg = self.perform_content_negotiation(request)
    (request.accepted_renderer, request.accepted_media_type) = neg
    (version, scheme) = self.determine_version(request, *args, **kwargs)
    (request.version, request.versioning_scheme) = (version, scheme)
    self.perform_authentication(request)
    self.check_permissions(request)
    self.check_throttles(request)
