private void showExpandBlockDialog(int dialogType, MemoryBlock block) {
		ExpandBlockModel model;
		if (dialogType == ExpandBlockDialog.EXPAND_UP) {
			model = new ExpandBlockUpModel(tool, program);
		}
		else {
			model = new ExpandBlockDownModel(tool, program);
		}

		ExpandBlockDialog dialog =
			new ExpandBlockDialog(tool, model, block, program, dialogType);
		model.initialize(block);
		dialog.dispose();
	}
Show the dialog to expand a memory block.

@param dialogType expand up or down
@param block block to expand
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/memory/MemoryMapProvider.java