">
  Read/Write Property Map</a>, where the key type and the value type are
  the vertex descriptor type of the graph.<br>

  <b>Default:</b> an <a
  href="../../property_map/doc/iterator_property_map.html">
  <tt>iterator_property_map</tt></a> created from a
  <tt>std::vector</tt> of vertex descriptors of size
  <tt>num_vertices(g)</tt> and using the <tt>i_map</tt> for the index
  map.<br>
  <b>Python</b>: Unsupported parameter.
</blockquote>

UTIL: <tt>discover_time_map(TimeMap t_map)</tt>
<blockquote>
  