private File chooseExportFile() {
		GhidraFileChooser chooser = createExportFileChooser();
		File file = chooser.getSelectedFile();
		chooser.dispose();
		if (file == null) {
			return null;
		}
		if (file.exists()) {
			int result = OptionDialog.showYesNoDialog(GTable.this, "Overwrite?",
				"File exists. Do you want to overwrite?");

			if (result != OptionDialog.OPTION_ONE) {
				return null;
			}
		}
		storeLastExportDirectory(file);
		return file;
	}
A method that subclasses can override to signal that they wish not to have this table's
built-in popup actions.   Subclasses will almost never need to override this method.

@return true if popup actions are supported
Ghidra/Framework/Docking/src/main/java/docking/widgets/table/GTable.java