1. Compile the project and run: http://localhost/officeclip/swagger/docs/v1

2. Save the output in a file swagger.json (in this folder)

3. While making adjustments to swagger.extras.json, do not open the file in visual studio editor, instead open in notepad++

4. On a command prompt cd to this folder and run c:\officeclipnew\tools\jsonmerge\bin\debug\jsonmerge.exe .\swagger.json .\swagger.extras.json .\swagger.merged.json (this will create the merged file)

5. Run http://localhost/officeclip/service/rest/docs/officeclip-rest-api.html on a browser

For reference see: 
    https://github.com/Redocly/redoc, also
    https://api.apis.guru/v2/specs/instagram.com/1.0.0/swagger.yaml and 
    https://api.apis.guru/v2/specs/slack.com/1.7.0/openapi.yaml