code: public boolean exists(String path) {
          if (path == null) {
              return false;
          }
          for (SubdocOperationResult<OPERATION> result : resultList) {
              if (path.equals(result.path()) && !(result.value() instanceof Exception)) {
                  return true;
              }
          }
          return false;
      }
docs: Checks whether the given path is part of this result set, eg. an operation targeted it, and the operation executed successfully.
  
  @return true if that path is part of the successful result set, false in any other case.