127.0.0.1:6379> xgroup help
 1) XGROUP <subcommand> [<arg> [value] [opt] ...]. Subcommands are:
 2) CREATE <key> <groupname> <id|$> [option]
 3)     Create a new consumer group. Options are:
 4)     * MKSTREAM
 5)       Create the empty stream if it does not exist.
 6)     * ENTRIESREAD entries_read
 7)       Set the group's entries_read counter (internal use).CREATECONSUMER <key> <groupname> <consumer>
 8)     Create a new consumer in the specified group.
 9) DELCONSUMER <key> <groupname> <consumer>
10)     Remove the specified consumer.
11) DESTROY <key> <groupname>
12)     Remove the specified group.
13) SETID <key> <groupname> <id|$> [ENTRIESREAD entries_read]
14)     Set the current group ID and entries_read counter.
15) HELP
16)     Prints this help.

127.0.0.1:6379> xgroup help
 1) XGROUP <subcommand> [<arg> [value] [opt] ...]. Subcommands are:
 2) CREATE <key> <groupname> <id|$> [option]
 3)     Create a new consumer group. Options are:
 4)     * MKSTREAM
 5)       Create the empty stream if it does not exist.
 6)     * ENTRIESREAD entries_read
 7)       Set the group's entries_read counter (internal use).
 8) CREATECONSUMER <key> <groupname> <consumer>
 9)     Create a new consumer in the specified group.
10) DELCONSUMER <key> <groupname> <consumer>
11)     Remove the specified consumer.
12) DESTROY <key> <groupname>
13)     Remove the specified group.
14) SETID <key> <groupname> <id|$> [ENTRIESREAD entries_read]
15)     Set the current group ID and entries_read counter.
16) HELP
17)     Prints this help.