def graph_on_authentication_method_load_start_external_users_self_service_sign_up(self) -> GraphOnAuthenticationMethodLoadStartExternalUsersSelfServiceSignUpRequestBuilder:
        """
        Casts the previous resource to onAuthenticationMethodLoadStartExternalUsersSelfServiceSignUp.
        """
        from .graph_on_authentication_method_load_start_external_users_self_service_sign_up.graph_on_authentication_method_load_start_external_users_self_service_sign_up_request_builder import GraphOnAuthenticationMethodLoadStartExternalUsersSelfServiceSignUpRequestBuilder

        return GraphOnAuthenticationMethodLoadStartExternalUsersSelfServiceSignUpRequestBuilder(self.request_adapter, self.path_parameters)

        Casts the previous resource to onAuthenticationMethodLoadStartExternalUsersSelfServiceSignUp.
        
msgraph/generated/identity/authentication_events_flows/item/graph_external_users_self_service_sign_up_events_flow/on_authentication_method_load_start/on_authentication_method_load_start_request_builder.py