void closeProgram() throws Exception {
		ProgramManager pm = plugin.getTool().getService(ProgramManager.class);
		runSwing(() -> pm.closeProgram(program, true));
	}
A comparator to sort Symbols the same way as the SymbolNode sorts
Ghidra/Features/Base/src/test.slow/java/ghidra/app/plugin/core/symboltree/SymbolTreeTestUtils.java