code: @Override
      public String visit(final JmesPathSubExpression subExpression, final Void aVoid)
              throws InvalidTypeException {
          final String prefix = "new JmesPathSubExpression( ";
          return subExpression.getExpressions().stream()
                  .map(a -> a.accept(this, aVoid))
                  .collect(Collectors.joining(",", prefix, ")"));
      }
docs: Generates the code for a new JmesPathSubExpression.
  
  @param subExpression JmesPath subexpression type
  @param aVoid         void
  @return String that represents a call to
  the new subexpression
  @throws InvalidTypeException