def by_risky_user_id(self,risky_user_id: str) -> RiskyUserItemRequestBuilder:
        """
        Provides operations to manage the riskyUsers property of the microsoft.graph.identityProtectionRoot entity.
        param risky_user_id: The unique identifier of riskyUser
        Returns: RiskyUserItemRequestBuilder
        """
        if risky_user_id is None:
            raise TypeError("risky_user_id cannot be null.")
        from .item.risky_user_item_request_builder import RiskyUserItemRequestBuilder

        url_tpl_params = get_path_parameters(self.path_parameters)
        url_tpl_params["riskyUser%2Did"] = risky_user_id
        return RiskyUserItemRequestBuilder(self.request_adapter, url_tpl_params)

        Provides operations to manage the riskyUsers property of the microsoft.graph.identityProtectionRoot entity.
        param risky_user_id: The unique identifier of riskyUser
        Returns: RiskyUserItemRequestBuilder
        
msgraph/generated/identity_protection/risky_users/risky_users_request_builder.py