Handler class to handle Telegram commands.
CommandHandler(command, callback, filters = NULL, pass_args = FALSE)The command or list of commands this handler should listen for.
The callback function for this handler.
See Handler for information about this function.
(Optional). Only allow updates with these filters. See
Filters for a full list of all available filters.
(Optional). Determines whether the handler should be passed
args, received as a vector, split on spaces.
An R6Class object.