private void setTreesPending() {
		incomingTree.setRootNode(new PendingRootNode());
		outgoingTree.setRootNode(new PendingRootNode());
	}
A variable used to restrict open-ended operations, like expanding all nodes or filtering.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/calltree/CallTreeProvider.java