g envelopes may be visited as well;
 the client is responsible for filtering these out.
 In most situations there will be many items in the tree which do not
 intersect the search envelope and which are not visited - thus
 providing improved performance over a simple linear scan.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../com/vividsolutions/jts/index/SpatialIndex.html#query(com.vividsolutions.jts.geom.Envelope, com.vividsolutions.jts.index.ItemVisitor)">query</A></CODE> in int