ollection stored in the class object.
     descriptors.</dd>
<dd><code>matches</code> - Matches. Each matches[i] is k or less matches for the same query descriptor.</dd>
<dd><code>k</code> - Count of best matches found per each query descriptor or less if a query descriptor has
     less than k possible matches in total.
     false, the matches vector has the same size as queryDescriptors rows. If compactResult is true,
     the matches vector does not contain matches for fully masked-out query descriptors.