code: public int countIn(CharSequence sequence, CountMethod countMethod) {
          return countIn(sequence, countMethod, SpanCondition.SIMPLE);
      }
docs: Returns the number of matching characters found in a character sequence, using SpanCondition.SIMPLE.
  The code alternates spans; see the class doc for {@link UnicodeSetSpanner} for a note about boundary conditions.
  @param sequence
  the sequence to count characters in
  @param countMethod
  whether to treat an entire span as a match, or individual elements as matches
  @return the count. Zero if there are none.