@Override
	public String getToolTip() {
		String refString = isCallReference ? "Called from " : "Referenced from ";
		return refString + getSourceAddress();
	}
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