anchor.diff:      }
     }
     ''';
  -
  -  final _query_pullRequests = 
  -  r'''
  -  query { 
  -    repository(owner:"${repositoryOwner}", name:"${repositoryName}") {
  -      pullRequests(first: 25, 
  -        after: ${after}, 
  -        ${states})
  -      {
  -        totalCount,
  -        pageInfo ${pageInfoResponse}
  -        edges {
  -          node ${pullRequestResponse}
  -        }
  -      }
  -    }
  -  }
  -  ''';
  -
   }
   
   class _PageInfo {
  
positive.code:   }
    ''';
  
    final _query_issues = 
    r'''
    query { 
      repository(owner:"${repositoryOwner}", name:"${repositoryName}") {
        issues(first: 25, 
          after: ${after}, 
          ${filter})
        {
          totalCount,
          pageInfo ${pageInfoResponse}
          edges {
            node ${issueResponse}
          }
        }
      }
    }
    ''';
  
    final _query_pullRequest = 
    r'''
    query { 
  
negative.code: 
        return Issue.fromGraphQL(page.data['repository']['issue']);
    }
    
    Future<PullRequest> pullRequest({String owner, String name, int number}) async {
      var query = _query_pullRequest
        .replaceAll(r'${repositoryOwner}', owner)
  