anchor.diff:  bodyContentTypeFacet:
       contentType=SCALAR
           (
  -            SCALAR
  +            empty=id
               |   (
                       MAP_START
                           bodyFacets
  
positive.code:     ;
  
  securedBy:
      name=SCALAR |
          (   MAP_START
                  name=SCALAR?
                  ( SCALAR | parameters=objectInstance)?
              MAP_END
          )
      ;
  
negative.code:     ;
  
  securitySchemeTypeFacet:
      'type' type=id
      ;
  
  securitySchemeSettingsFacet:
  