code: @Nonnull
    public TypeaheadDataset setLimit (@Nonnegative final int nLimit)
    {
      ValueEnforcer.isGT0 (nLimit, "Limit");
      m_nLimit = nLimit;
      return this;
    }
docs: The max number of suggestions from the dataset to display for a given
  query. Defaults to 5.
  
  @param nLimit
  The new limit. Must be &ge; 1.
  @return this