docs: function (layerGroup) {
  		if (layerGroup._proxyMcgLayerSupportGroup === undefined ||
  			layerGroup._proxyMcgLayerSupportGroup !== this) {
  
  			return;
  		}
  
  		delete layerGroup._proxyMcgLayerSupportGroup;
  		layerGroup.addLayer = layerGroup._originalAddLayer;
  		layerGroup.removeLayer = layerGroup._originalRemoveLayer;
  		layerGroup.onAdd = layerGroup._originalOnAdd;
  		layerGroup.onRemove = layerGroup._originalOnRemove;
  
  		var id = L.stamp(layerGroup);
  		delete this._proxyLayerGroups[id];
  		delete this._proxyLayerGroupsNeedRemoving[id];
  
  		this._removeFromOwnMap(layerGroup);
  	}