code: private FieldPosition[] getPositiveSuffixFieldPositions() {
          if (positiveSuffixFieldPositions == null) {
              if (posSuffixPattern != null) {
                  positiveSuffixFieldPositions = expandAffix(posSuffixPattern);
              } else {
                  positiveSuffixFieldPositions = EmptyFieldPositionArray;
              }
          }
          return positiveSuffixFieldPositions;
      }
docs: Returns the FieldPositions of the fields in the suffix used for
  positive numbers. This is not used if the user has explicitly set
  a positive suffix via <code>setPositiveSuffix</code>. This is
  lazily created.
  
  @return FieldPositions in positive prefix