public static NearestNeighbor nearestNeighbor(String docVectorName, String queryVectorName) {
        return new NearestNeighbor(docVectorName, queryVectorName);
    }
NearestNeighbor nearest neighbor
https://docs.vespa.ai/en/reference/query-language-reference.html#nearestneighbor

@param docVectorName the vector name defined in the vespa schema
@param queryVectorName the vector name in this query
@return the nearest neighbor query
client/src/main/java/ai/vespa/client/dsl/Q.java