code: public QuadTreeIterator getIterator(Geometry query, double tolerance) {
  		QuadTreeImpl.QuadTreeIteratorImpl iterator = m_impl.getIterator(query, tolerance);
  		return new QuadTreeIterator(iterator, false);
  	}
docs: Gets an iterator on the QuadTree. The query will be the Envelope2D that
  bounds the input Geometry. To reuse the existing iterator on the same
  QuadTree but with a new query, use the reset_iterator function on the
  QuadTree_iterator.
  \param query The Geometry used for the query. If the
  Geometry is a Line segment, then the query will be the segment. Otherwise
  the query will be the Envelope2D bounding the Geometry.
  \param tolerance The tolerance used for the intersection tests.