anchor.diff:                  $ref: '#/components/schemas/collections'
           description: register a new collection of FAIR Metrics
         responses:
  +        '302':
  +          description: "302 redirect"
  +          headers:
  +            Location:
  +              schema:
  +                type: "string"
           '200':
             content:
               application/json:
  
positive.code:         schema:
            type: string
        responses:
          '200':
            content:
              application/json:
  
negative.code:   /metrics:
      get:
        responses:
          '302':
            description: "302 redirect"
            headers:
              Location:
                schema:
                  type: "string"
  
          '200':
            content:
              application/json:
  