code: @Deprecated
      @Override
      public BsonDocument execute(final WriteBinding binding) {
          return withConnection(binding, new CallableWithConnection<BsonDocument>() {
              @Override
              public BsonDocument call(final Connection connection) {
                  if (serverIsAtLeastVersionThreeDotTwo(connection.getDescription())) {
                      return executeCommand(binding, "admin", FSYNC_UNLOCK_COMMAND, connection);
                  } else {
                      return queryUnlock(connection);
                  }
              }
          });
      }
docs: Unlocks the MongoDB server, allowing write operations to go through.
  
  @param binding the binding to execute in the context of
  @return the result of the operation
  @deprecated use {@link #execute(ReadBinding)} instead.