Indicates whether the world is the node's default (the one where new players are spawned into if not handled by plugins). If the node does not support default worlds or it simply doesn't have one this field should be left to its default value (false). If the hub receives more than one default world it should consider the last received one as the default world.
World's dimension in the MCPE format (0: overworld, 1: nether, 2: end).
World's group id. Similar worlds can be grouped together and removed with the RemoveWorldGroup packet. If the world is independent and has no group the group id must be the same as the world id.
Name of the world, it doesn't need to be unique.
Id of the world. Must be unique on the node.
Notifies the hub that a new world has been created on the node.