@Override
	public void dispose() {
		if (t != null) {
			t.interrupt();
		}
	}
Reads the url file for the url string and returns it.
@param urlFilePath the path for the url file
@return the url string, or null if the file cannot be read.
Ghidra/Features/GhidraGo/src/main/java/ghidra/app/plugin/core/go/ipc/GhidraGoListener.java