Type of the dialog to show. Can be either a predefined io.Connect dialog type, or a custom one.

• YesNo - dialog with "Yes" and "No" buttons;
• YesNoCancel - dialog with "Yes", "No" and "Cancel" buttons;
• OkCancel - dialog with "OK" and "Cancel" buttons;
• Ok - dialog with an "OK" button;
• Custom - custom dialog;
• SingleInputDialog - dialog with a text input field;

• YesNo
• YesNoCancel
• OkCancel
• Ok
• Custom
• SingleInputDialog