IsDone
bool IsDone() const;
virtual bool IsDone() const;
virtual bool IsDone() const;
virtual bool IsDone() const = 0;
if (iterator->IsDone())
bool IsDone() const;
if (task->IsDone()) {
} while (!handler->IsDone());
if (IsDone() && !fFetchBodies.empty()) {
if (!command->IsDone()) {