So often when creating a dialog the default commit and cancel actions are used. But the developer must explicitly create the configuration over and over. I think it would be a nice improvement if there was a fallback configuration used by the system. For example:

actions:
commit:
class: info.magnolia.ui.admincentral.dialog.action.SaveDialogActionDefinition
cancel:
class: info.magnolia.ui.admincentral.dialog.action.CancelDialogActionDefinition