anchor.diff:  ### Remove links [DELETE]
   + Response 204
   
  -## UserGroup Collection [/groups{?page,per_page,sort,user_id}]
  +## UserGroup Collection [/groups{?page,per_page,sort,user_id,include}]
   A collection of User Group resources.
   
   All collections add a meta attribute hash containing paging
  
positive.code:                 "links": {
                      "workflows.subjects": {
                          "href": "/subjects{?workflow_id=workflows.id}",
                          "type": "subject"
                      },
                      "workflows.project": {
                          "href": "/projects/{workflows.project}",
                          "type": "project"
                      },
                      "workflows.subject_sets": {
                          "href": "/subject_sets/{workflows.subject_set}",
                          "type": "subject_set"
                      }
                  },
                  "workflows": {
                      "id": "22",
                      "name": "Find moons",
                      "created_at": "2014-02-13T10:11:34Z",
  
negative.code: + Paraemters
    + id (required, integer) ... the id of the Subject Set to modify
    + link_type (required, string) ... the relationship to modify
    + link_ids (required, integer) ... comma seperated list of ids to remove
  
  ### Destroy some links [DELETE]
  Will only remove the link. This operation does not destroy the linked object.
  
  + Response 204
  
  ## SubjectSet Collection [/subject_sets{?page,per_page,sort,project_id,workflow_id,include}]
  A collection of SubjectSet resources.
  
  All collections add a meta attribute hash containing paging
  