> Entering an invalid option (like -x) will print the usage message based on the @Param lines.
Excellent -- I knew I had seen the message somehow, and that did it:
hostname% asadmin validate-multicast --tomrocks
Invalid option: --tomrocks
Usage: asadmin [asadmin-utility-options] validate-multicast
[--multicastport <multicastport>]
[--multicastaddress <multicastaddress>]
[--bindinterface <bindinterface>] [--sendperiod <sendperiod>]
[--timeout <timeout>] [--verbose <verbose>]
[-?|--help[=<help(default:false)>]]
Command validate-multicast failed.
hostname%