// objective: test the \code command
// check: indexpage.xml
/** \mainpage
 * \code{.py}
 * # comment in Python
 * class Python:
 *   pass
 * \endcode
 *
 * \code{.cpp}
 * // comment in a code block
 * class Cpp {};
 * \endcode
 *
 * \code
 * // implicit code language
 * \endcode
 */