Configuring default room configuration

It is possible to define value for every room option by setting it’s value to defaultRoomConfig as a property:

muc () {
    defaultRoomConfig {
        <option> = <value>
    }
}

for example:

muc () {
    defaultRoomConfig {
        'tigase#presence_delivery_logic' = 'PREFERE_LAST'
    }
}