action: character, one of "(un)follow","(un)block", "(un)mute", "(un)pin","note"
comment: character (if action="note"), The comment to be set on that user. Provide an empty string or leave out this parameter to clear the currently set note.
token: user bearer token (read from file by default)
verbose: logical whether to display messages
Returns
no return value, called for site effects
Examples
## Not run:# follow a userpost_user("xxxxxx", action ="follow")# unfollow a userpost_user("xxxxxx", action ="unfollow")## End(Not run)