private void closeAllProgramsFor(PluginTool theTool) {
		List<Program> programs = getOpenProgamsFor(theTool);
		programs.forEach(p -> close(p));
	}
Closes the TestEnv's default tool.  This method is asynchronous, so you
must wait for the Swing thread to perform the work yourself.
Watch out for modal dialogs.
Ghidra/Features/Base/src/main/java/ghidra/test/TestEnv.java