(self, *, rpc_message: RpcMessage, client: "BusClient")
Called before `rpc_message` is sent to the bus

        `rpc_message` is mutable and may therefore be changed prior to being sent
Called before `rpc_message` is sent to the bus
Called before rpc_message is sent to the bus
async def before_rpc_call(self, *, rpc_message: RpcMessage, client: "BusClient"):
        """Called before `rpc_message` is sent to the bus

        `rpc_message` is mutable and may therefore be changed prior to being sent
        """
        pass
async def before_rpc_call ( self , * , rpc_message : RpcMessage , client : "BusClient" ) : pass