#define optional_CPP11_OR_GREATER_ ( optional_CPLUSPLUS >= 201103L )
#define optional_CPP14_OR_GREATER ( optional_CPLUSPLUS >= 201402L )
#define optional_CPP17_OR_GREATER ( optional_CPLUSPLUS >= 201703L )
#define optional_CPP11_OR_GREATER_ ( optional_CPLUSPLUS >= 201103L )
#define optional_CPP14_OR_GREATER ( optional_CPLUSPLUS >= 201402L )
#define optional_CPP17_OR_GREATER ( optional_CPLUSPLUS >= 201703L )