* @param key The key of the channel, if given
* @param override If true, override all join restrictions such as +bkil
* @return A pointer to the Channel the user was joined to. A new Channel may have
* been created if the channel did not exist before the user was joined to it.
* If the user could not be joined to a channel, the return value may be NULL.
*/
* @param key The key of the channel, if given
* @param override If true, override all join restrictions such as +bkil
* @return A pointer to the Channel the user was joined to. A new Channel may have
* been created if the channel did not exist before the user was joined to it.
* If the user could not be joined to a channel, the return value may be NULL.
*/