showSideboard
Deprecated
The extension function is not needed, there is a member function of Sideboard which does the same thing.
Replace with
sideboard.displayToPlayer(this)
Content copied to clipboard
Displays the given sideboard to the player. Future updates will be visible to the player as well.
If the player leaves and then reconnects, you have to call this function again if you wish to show the player the same sideboard.