private void handleAllSelection() {
		AddressSetView addressSet = navigatable.getProgram().getMemory();
		ProgramSelection selection = new ProgramSelection(addressSet);
		NavigationUtils.setSelection(tool, navigatable, selection);
		clearStatusText();
	}
Class to set up dialog box that will enable the user
to set the available options for block selection
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/select/SelectBlockDialog.java