Use ImportSpec.
The same emitter under the old binding name, so a template still binding (importSpec) keeps working. Must stay AFTER ImportSpec: class fields initialise in order, and the other way round this captures undefined.
Use ComponentJson.
Use ErrorMessage.
Deprecated
Use CancelDialog.
The same emitter under the old binding name, so a template still binding (cancelDialog) keeps working. Must stay AFTER CancelDialog: class fields initialise in order, and the other way round this captures undefined.