Is there any way to ingest a payload in NQuad format via REST in Virtuoso?

According to https://etl.linkedpipes.com/tutorials/how-to/load_data_to_virtuoso:

> ... You can load data to Virtuoso by its [bulk loader](http://vos.openlinksw.com/owiki/wiki/VOS/VirtBulkRDFLoader). This is a Virtuoso-specific solution. However, the standards-based [SPARQL 1.1 Graph Store HTTP Protocol](https://www.w3.org/TR/sparql11-http-rdf-update) does not support loading data in quad-based RDF syntaxes that specify named graphs. Instead, named graph IRIs must be provided by a query parameter. If you want to load multiple files into multiple named graphs, the Virtuoso bulk loader can do it for you ...

Nonetheless, I need to be able to send the Quads as a payload in REST request. As I haven't yet found an alternative in the official documentation and was wondering if this feature is indeed not available in Virtuoso.
If not, it might be of interest to include this in the development roadmap, since that same feature is available in other triplestores, such as Jena Fuseki, AllegroGraph, BlazeGraph, GraphDB and RDFox.
NQuad Ingestion via REST
This is a GitHub Issue
repo:virtuoso-opensource
owner:openlink
Title : NQuad Ingestion via REST
Issue date:

--- start body ---
Is there any way to ingest a payload in NQuad format via REST in Virtuoso?

According to https://etl.linkedpipes.com/tutorials/how-to/load_data_to_virtuoso:

> ... You can load data to Virtuoso by its [bulk loader](http://vos.openlinksw.com/owiki/wiki/VOS/VirtBulkRDFLoader). This is a Virtuoso-specific solution. However, the standards-based [SPARQL 1.1 Graph Store HTTP Protocol](https://www.w3.org/TR/sparql11-http-rdf-update) does not support loading data in quad-based RDF syntaxes that specify named graphs. Instead, named graph IRIs must be provided by a query parameter. If you want to load multiple files into multiple named graphs, the Virtuoso bulk loader can do it for you ...

Nonetheless, I need to be able to send the Quads as a payload in REST request. As I haven't yet found an alternative in the official documentation and was wondering if this feature is indeed not available in Virtuoso.
If not, it might be of interest to include this in the development roadmap, since that same feature is available in other triplestores, such as Jena Fuseki, AllegroGraph, BlazeGraph, GraphDB and RDFox.
--- end body ---
