/// spell checker state versioning support
typedef unsigned long int ChangeNumber ;
ChangeNumber changeNumber() const { return change_number_; }
void changeNumber(ChangeNumber value) { change_number_ = value; }
void nextChangeNumber() { ++change_number_; }
virtual void advanceChangeNumber() = 0;
/// spell checker state versioning support
typedef unsigned long int ChangeNumber ;
ChangeNumber changeNumber() const { return change_number_; }
void changeNumber(ChangeNumber value) { change_number_ = value; }
void nextChangeNumber() { ++change_number_; }
virtual void advanceChangeNumber() = 0;