transientDocumentMetadata
abstract var transientDocumentMetadata: ReadonlyRecord<ERROR CLASS: Symbol not found for JsString, ERROR CLASS: Symbol not found for JsBoolean??>?(source)
Controls if a document metadata property change event will trigger notebook document content change event and if it will be used in the diff editor, defaults to false. If the content provider doesn't persist a metadata property in the file document, it should be set to true.