static get type() {

		return 'UniformGroupNode';

	}
This node can be used to group single instances of {@link UniformNode}
and manage them as a uniform buffer.

In most cases, the predefined nodes `objectGroup`, `renderGroup` and `frameGroup`
will be used when defining the {@link UniformNode#groupNode} property.

- `objectGroup`: Uniform buffer per object.
- `renderGroup`: Shared uniform buffer, updated once per render call.
- `frameGroup`: Shared uniform buffer, updated once per frame.

@augments Node