anchor.diff:  
   + Parameters
     + id (required, integer) ... the id of the project to modify
  -  + link_type (required, string) ... the name of the link to edit. May only be subject_set or workflow
  +  + link_type (required, string)
  +    the name of the link to edit
  +        + Members
  +            + `workflows`
  +            + `subject_sets`
     + link_ids (required, string) ... comma separated list of ids to destroy
   
   + Request
  
positive.code: links.
  
  ### Add a Link [POST]
  The body key must match the link_type parameter. Workflow and Subjects
  added in this way will be copied and their id will be returned as part
  of the complete Project representation response.
  
  + Parameters
    + id (required, integer) ... the id of the project to add
    + link_type (required, string) ... the name of the link to edit. May only be workflow or subject_set
  
  + Request
  
  
negative.code: 
  ### Edit a single Project [PUT]
  A User must be the owner of a project or have update
  permissions to edit the resource. Workflow and Subject Set links may be
  edited. Removing a subject set or workflow causes the subject set or
  workflow to be destroyed. Adding a workflow or subject set causes
  the original to be copied and a new id to be returned.
  