anchor.diff:    Represents the latest point in the pull request timeline for which the viewer has seen the pull request's commits.
     """
     PULL_REQUEST_REVISION_MARKER
  +
  +  """
  +  Represents a 'automatic_base_change_failed' event on a given pull request.
  +  """
  +  AUTOMATIC_BASE_CHANGE_FAILED_EVENT
  +
  +  """
  +  Represents a 'automatic_base_change_succeeded' event on a given pull request.
  +  """
  +  AUTOMATIC_BASE_CHANGE_SUCCEEDED_EVENT
   
     """
     Represents a 'base_ref_changed' event on a given issue or pull request.
  
positive.code: }
  
  """
  Represents a 'base_ref_changed' event on a given issue or pull request.
  """
  type BaseRefChangedEvent implements Node {
  
negative.code: 
  """An invitation for a user to be added to a repository."""
  type RepositoryInvitation implements Node {
    """The email address that received the invitation."""
    email: String
    id: ID!
  
    """The user who received the invitation."""
    invitee: User
  
    """The user who created the invitation."""
    inviter: User!
  
    """
    The permission granted on this repository by this invitation.
    
    **Upcoming Change on 2020-10-01 UTC**
    **Description:** Type for `permission` will change from `RepositoryPermission!` to `String`.
    **Reason:** This field may return additional values
    
    """
    permission: RepositoryPermission!
  
    """The Repository the user is invited to."""
    repository: RepositoryInfo
  }
  
  """The connection type for RepositoryInvitation."""
  type RepositoryInvitationConnection {
    """A list of edges."""
    edges: [RepositoryInvitationEdge]
  
    """A list of nodes."""
    nodes: [RepositoryInvitation]
  
    """Information to aid in pagination."""
    pageInfo: PageInfo!
  
    """Identifies the total count of items in the connection."""
    totalCount: Int!
  }
  
  """An edge in a connection."""
  type RepositoryInvitationEdge {
    """A cursor for use in pagination."""
    cursor: String!
  
    """The item at the end of the edge."""
    node: RepositoryInvitation
  }
  
  """Ordering options for repository invitation connections."""
  