OptionaleventStream: BotEventStreamTab-completion suggestions for input (a command if it starts with /) at
options.cursor, which defaults to the end of input.
To public chat. message can't be blank or longer than 256 characters.
The next chat event matching matcher (as in watch). No timeout unless
timeoutMs is set.
Chat events matching matcher, as they arrive, until the caller stops
iterating. A string matches as a substring of the plain text; a RegExp's
groups go in captures and groups. options.sources keeps only those
sources.
Sends /msg <recipient> <message>.
Runs a command; the leading
/is optional.