code: public List<Group> getResult(final int[] priKeyIndices, final int limit, final int numStdDev,
        final char sep) {
      final PostProcessor proc = new PostProcessor(this, new Group(), sep);
      return proc.getGroupList(priKeyIndices, numStdDev, limit);
    }
docs: Returns an ordered List of Groups of the most frequent distinct population of subset tuples
  represented by the count of entries of each group.
  @param priKeyIndices these indices define the dimensions used for the Primary Keys.
  @param limit the maximum number of groups to return. If this value is &le; 0, all
  groups will be returned.
  @param numStdDev the number of standard deviations for the upper and lower error bounds,
  this value is an integer and must be one of 1, 2, or 3.
  <a href="{@docRoot}/resources/dictionary.html#numStdDev">See Number of Standard Deviations</a>
  @param sep the separator character
  @return an ordered List of Groups of the most frequent distinct population of subset tuples
  represented by the count of entries of each group.