Convenience macro for libssh2_userauth_keyboard_interactive_ex(3) calls
#include <libssh2.h>
int
libssh2_userauth_keyboard_interactive(LIBSSH2_SESSION* session,
                                      const char *username,
           LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC((*response_callback)));
        This is a macro defined in a public libssh2 header file that is using the underlying function libssh2_userauth_keyboard_interactive_ex(3).