InputRange (with length) of all users currently seen by the associated client.
The range includes the user for the associated client. Users that are not a member of any
of the channels the associated client is a member of, but have sent a private message to
the associated client, are not included.
InputRange (with length) of all users currently seen by the associated client.
The range includes the user for the associated client. Users that are not a member of any of the channels the associated client is a member of, but have sent a private message to the associated client, are not included.