private boolean ignoreNonCallReference(CallNode nodeToAdd) {
		if (nodeToAdd.isCallReference()) {
			return false; // is a call reference; do not ignore node
		}

		// a non-call reference; check options
		return !callTreeOptions.allowsNonCallReferences();
	}
Returns true if the reference associated with this node is a call reference type.
@return true if the reference associated with this node is a call reference type.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/calltree/CallNode.java