anchor.diff:      """List only the activities between the specific time range."""
       dateRange: TimeRangeInput
     ): [Analytics]
  +
  +  """Message event type"""
  +  articleType: ArticleTypeEnum!
  +
  +  """Attachment of this article"""
  +  attachmentUrl: String
  +
  +  """Attachment hash to search or identify files"""
  +  attachmentHash: String
   }
   
   """Basic entity. Modeled after Relay's GraphQL Server Specification."""
  
positive.code:     reason: String
    ): MutationResult
  
    """Create a reply that replies to the specified article."""
    CreateReply(
      articleId: String!
  
negative.code: 
    """List the articles with replies of certain types"""
    replyTypes: [ReplyTypeEnum]
  
    """List the articles with certain types"""
    articleTypes: [ArticleTypeEnum]
  
    """Show the media article similar to the input url"""
    mediaUrl: String
  }
  
  """
  