~ImpossibleError();
};
+class XBT_PUBLIC InitializationError : public std::logic_error {
+public:
+ explicit InitializationError(const std::string& arg) : std::logic_error(arg) {}
+ ~InitializationError();
+};
+
class XBT_PUBLIC UnimplementedError : public std::logic_error {
public:
explicit UnimplementedError(const std::string& arg) : std::logic_error(arg) {}
