[Bug]: Swagger UI shows duplicate entity groups for single entity definition

[JerryNixon]

When using Data API builder 1.7.75, the Swagger UI generated at /api/openapi displays the Actor entity twice, even though Actor is defined only once in the configuration. No other entity shares its REST path or alias.

I think this has to do with descriptions

Steps to Reproduce:

1. Use this configuration (trimmed for brevity):

   {
     "entities": {
       "Actor": {
         "source": { "object": "dbo.Actor", "type": "table" },
         "rest": { "enabled": true, "path": "/Actor" }
       },
       "Character": {
         "source": { "object": "dbo.Character", "type": "table" },
         "rest": { "enabled": true, "path": "/Character" }
       },
       "SeriesActors": {
         "source": { "object": "dbo.SeriesActors", "type": "view" },
         "rest": { "enabled": true, "path": "/SeriesActors" }
       },
       "GetSeriesActors": {
         "source": { "object": "dbo.GetSeriesActors", "type": "stored-procedure" },
         "rest": { "enabled": true, "path": "/GetSeriesActors", "methods": ["post"] }
       }
     }
   }
   

2. Start DAB (dab start --config dab-config.json).

3. Open the Swagger UI at /api/openapi.

Expected Behavior: Each entity should appear once under its respective REST path group.

Actual Behavior: Swagger shows two separate groups labeled Actor, each listing the same endpoints (GET, PUT, PATCH, DELETE, POST).

Environment:

• Data API builder version: 1.7.75
• Database: SQL Server
• Host: Azure Container Apps
• Authentication: StaticWebApps provider

Notes:

• No other entity defines path: "/Actor".
• The duplication persists even when unrelated entities (like stored procedures or views) are removed.
• Suggest investigating the Swagger document generator—likely a duplicate path or tag registration in OpenApiDocumentBuilder.