For example:
wsadmin>AdminTask.listSIBusMembers('[-bus bus1 ]')
[cells/cell01/buses/bus1|sib-bus.xml#SIBusMember_1092155259869]
[cells/cell01/buses/bus1|sib-bus.xml#SIBusMember_1092159844593]
[cells/cell01/buses/bus1|sib-bus.xml#SIBusMember_1092160253751]
wsadmin>AdminTask.listSIBEngines('[-bus bus1 ]')
'node01.server1-bus1(cells/cell01/nodes/node01/servers/server1|sib-engines.xml#
SIBMessagingEngine_1212163145962)\r\n
node02.server2-bus2(cells/cell01/nodes/node02/servers/server2|sib-engines.xml#
SIBMessagingEngine_1212163146273)'