import msgpack import freetime.entity.msg # create a new message msg = freetime.entity.msg.MsgPack() # set the command to "start" msg.setCmdAction("start") # encode the message as MsgPack packed_msg = msgpack.packb(msg.toJSON())In this example, a new MsgPack message is created using the freetime.entity.msg package. The setCmdAction() function is then called to set the command action for the message to "start". Finally, the message is encoded using MsgPack using the msgpack.packb() function. Package Library: The package library used in this example is likely freetime.entity.msg, as that is the package where the MsgPack message class is defined. However, it is possible that other packages are imported but not shown in this specific code snippet.