\brief Determine the kind of a particular chunk within a completion string.
\param completion_string the completion string to query.
\param chunk_number the 0-based index of the chunk in the completion string.
\returns the kind of the chunk at the index \c chunk_number.
See Implementation
\brief Determine the kind of a particular chunk within a completion string.
\param completion_string the completion string to query.
\param chunk_number the 0-based index of the chunk in the completion string.
\returns the kind of the chunk at the index \c chunk_number.