anchor.diff:  
   + Attributes
       + provider (required) - Id of the creating [component](#reference/miscellaneous/api-index/component-list).
  -    + metadata (required) - Array of metadata objects
  -        + Metadata (object)
  +    + metadata (required, array) - Array of metadata objects
  +        + (object)
               + key (required)
               + value (required)
   
  
positive.code: 
  + Attributes
      + metadata (array,required) - Array of metadata objects
          + Metadata (object)
              + key (required)
              + value (required)
  
  
negative.code: 
  + Attributes
      + provider (required) - Id of the creating [component](#reference/miscellaneous/api-index/component-list)
      + metadata (required, array) - Array of metadata objects
          + (object)
              + key (required)
              + value (required)
  
  