anchor.diff:    """The repository the ref belongs to."""
     repository: Repository!
   
  -  """The object the ref points to."""
  +  """
  +  The object the ref points to.
  +  
  +  **Upcoming Change on 2019-07-01 UTC**
  +  **Description:** Type for `target` will change from `GitObject!` to `GitObject`.
  +  **Reason:** The `target` field may return `null` values and is changing to nullable
  +  
  +  """
     target: GitObject!
   }
   
  
positive.code:     since: DateTime
    ): RepositoryConnection!
  
    """Identifies the date and time when the object was last updated."""
    updatedAt: DateTime!
  
  
negative.code:   commitUrl: URI!
    id: ID!
  
    """
    Indicates whether the Blob is binary or text
    
    **Upcoming Change on 2019-07-01 UTC**
    **Description:** Type for `isBinary` will change from `Boolean!` to `Boolean`.
    **Reason:** The `isBinary` field may return `null` when it cannot determine if a Blob is binary.
    
    """
    isBinary: Boolean!
  
    """Indicates whether the contents is truncated"""
  