@Override
		public void programArchitectureChanged(DataTypeManager manager) {
			// need to force all cached datatype tooltips to be cleared 
			// due to change in data organization
			unloadChildren();
			nodeChangedUpdater.update();
		}
Finds the node that represents the given category.

@param localCategory the category of interest
@param loadChildren true will load child nodes when searching; false will not load children
@return the node
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/datamgr/tree/ArchiveNode.java