The method DeleteDocumentsAsync in DocumentApiClient uses the DeleteDocumentsQuery class for query parameter. It has a Silent property but this is used only for the DeleteDocumentAsync (single document version of the delete operation).
In addition, the class is missing the query parameter ignoreRevs.

https://www.arangodb.com/docs/stable/http/document-working-with-documents.html#removes-multiple-documents

We should create a specific model for query parameters of the DeleteDocumentsAsync method.