GTree getTree() {
		return tree;
	}
A list into which tasks to be run will accumulated until we put them into the GTree's
task system.  We do this because the tasks run so fast that we can get too much thread
creation from the GTree's worker.  By buffering these behind a SwingUpdateManager, we will
prevent to much work from happening too fast.  Also, we perform the work in a bulk task
so that the tree can benefit from optimizations made by the bulk task.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/symboltree/SymbolTreeProvider.java