code: public Query getNearestByLimit(DATA queryData, int limit) {
  		return getNearest(queryData, Double.POSITIVE_INFINITY, limit);
  	}
docs: Performs a nearest-neighbors query on the M-Tree, constrained by the
  number of neighbors.
  @param queryData The query data object.
  @param limit     The maximum number of neighbors to fetch.
  @return A {@link Query} object used to iterate on the results.