code: @Override
      public void resolve(final ValueStack values) throws Exception
      {
          if (values.size() < getParameterCount())
              throw new Exception("missing operands for " + toString());
          try
          {
              final String target = values.popString();
  
              int i;
              for (i = 0; i < target.length() && Character.isWhitespace(target.charAt(i)); i++)
              {
                  //
              }
  
              values.push(target.substring(i));
          } catch (final ParseException e)
          {
              e.fillInStackTrace();
              throw new Exception(toString() + "; " + e.getMessage(), e);
          }
      }
docs: {@inheritDoc}