docs: @Override
      public <T> Flowable<T> get(@Nonnull ResultSetMapper<? extends T> mapper) {
          Preconditions.checkNotNull(mapper, "mapper cannot be null");
          return update.startWithDependency(Update.<T>createReturnGeneratedKeys(update.connections,
                  update.parameterGroupsToFlowable(), update.sql, mapper, true));
  
      }