Changes to Create a widget token

the request property ttl became optional

the ttl request property default value 3600 was added

added the optional property error to the response with the 401 status

the endpoint scheme security bearerAuth was added to the API

the request property ttl became required

the ttl request property's min was set to 1.00

the request property payload became not nullable

the request property ttl became not nullable

api operation id GenerateWidgetToken removed and replaced with webrtc_tokens_create

endpoint added