code: @Deprecated
      public String stripFrom(CharSequence source, boolean matches) {
          StringBuilder result = new StringBuilder();
          for (int pos = 0; pos < source.length();) {
              int inside = findIn(source, pos, !matches);
              result.append(source.subSequence(pos, inside));
              pos = findIn(source, inside, matches); // get next start
          }
          return result.toString();
      }
docs: Strips code points from source. If matches is true, script all that match <i>this</i>. If matches is false, then strip all that <i>don't</i> match.
  @param source The source of the CharSequence to strip from.
  @param matches A boolean to either strip all that matches or don't match with the current UnicodeSet object.
  @return The string after it has been stripped.
  @deprecated This API is ICU internal only. Use replaceFrom.
  @hide original deprecated declaration
  @hide draft / provisional / internal are hidden on Android