World's dimension in the MCPE format (0: overworld, 1: nether, 2: end).
Name of the world, it doesn't need to be unique.
Id of the world's parent or -1 if the world has no parent. This is usually used for nether/end which are children of an overworld world.
Id of the world. It's unique on the node.
Notifies the hub that a new world has been created on the node.