\brief Retrieve a range for a piece that forms the cursors spelling name.
Most of the times there is only one range for the complete spelling but for
Objective-C methods and Objective-C message expressions, there are multiple
pieces for each selector identifier.
\param pieceIndex the index of the spelling name piece. If this is greater
than the actual number of pieces, it will return a NULL (invalid) range.
\brief Retrieve a range for a piece that forms the cursors spelling name. Most of the times there is only one range for the complete spelling but for Objective-C methods and Objective-C message expressions, there are multiple pieces for each selector identifier.
\param pieceIndex the index of the spelling name piece. If this is greater than the actual number of pieces, it will return a NULL (invalid) range.
\param options Reserved.