Related Callback Conversion Task for CPDFConverter Instance
/**
* Called when a conversion operation begins.
*/
- (void)converter:(CPDFConverter *)converter didStartConvert:(NSError *)error;
/**
* Called when a conversion operation finishes.
*/
- (void)converter:(CPDFConverter *)converter didEndConvert:(NSError *)error;
/**
* Called when a conversion operation finishes working on a page in a document.
*/
- (void)converter:(CPDFConverter *)converter pageIndex:(NSUInteger)index pageCount:(NSUInteger)count;