code: public String deleteFrom(CharSequence sequence) {
          return replaceFrom(sequence, "", CountMethod.WHOLE_SPAN, SpanCondition.SIMPLE);
      }
docs: Delete all the matching spans in sequence, using SpanCondition.SIMPLE
  The code alternates spans; see the class doc for {@link UnicodeSetSpanner} for a note about boundary conditions.
  @param sequence
  charsequence to replace matching spans in.
  @return modified string.