code: @POST
     @Path("/{groupName:.+}")
     @Consumes(MediaType.APPLICATION_XML)
     public Response createEntry(InputStream entryStream, @PathParam("groupName") String groupName, @Context UriInfo uriInfo)
     {
  
        SessionProvider sessionProvider = sessionProviderService.getSessionProvider(null);
        try
        {
           RegistryEntry entry = RegistryEntry.parse(entryStream);
           regService.createEntry(sessionProvider, normalizePath(groupName), entry);
           URI location = uriInfo.getRequestUriBuilder().path(entry.getName()).build();
           return Response.created(location).build();
        }
        catch (IllegalArgumentException e)
        {
           LOG.error("Create registry entry failed", e);
           throw new WebApplicationException(e);
        }
        catch (IOException e)
        {
           LOG.error("Create registry entry failed", e);
           throw new WebApplicationException(e);
        }
        catch (SAXException e)
        {
           LOG.error("Create registry entry failed", e);
           throw new WebApplicationException(e);
        }
        catch (ParserConfigurationException e)
        {
           LOG.error("Create registry entry failed", e);
           throw new WebApplicationException(e);
        }
        catch (RepositoryException e)
        {
           LOG.error("Create registry entry failed", e);
           throw new WebApplicationException(e);
        }
     }
docs: Creates an entry in the group. In a case the group does not exist already it will be automatically
  created.
  @param entryStream the input stream corresponding to the content of the registry entry
  @param groupName the relative path to the group
  @request
  {code}
  "entryStream" : the input stream corresponding to the content of the registry entry
  {code}
  Example :
  {@code
  <registry xlinks:href="http://localhost:8080/portal/rest/registry/">
  <GroovyScript2RestLoader xlinks:href="http://localhost:8080/portal/rest/registry/exo:services/GroovyScript2RestLoader"/>
  <Audit xlinks:href="http://localhost:8080/portal/rest/registry/exo:services/Audit"/>
  </registry>
  }
  
  @LevelAPI Experimental