Add an entity in this world to a group in this world
Move group from other world to this one. A new handle will be generated!
Clear all entities and groups from this world
Disband all groups. Entities will not be removed
Remove all resources from this world
Create a new entity and add it to this world
Create a new group and add it to this world
Load a prefab
Optional
options: Readonly<ISerDeOptions<TDeserializer>>Optional
intoGroup: numberMerge entities from another world into this one
Optional
intoGroup: numberRemove a group and all entities inside from this world
Remove a resource from this world
Add several entities in this world to a group in this world