p&lt;subgraph, PropertyTag&gt;::type
get(PropertyTag, subgraph&amp; g)

template &lt;class PropertyTag&gt;
property_map&lt;subgraph, PropertyTag&gt;::const_type
get(PropertyTag, const subgraph&amp; g)
</pre>
    Returns the property map object for the vertex or edge property
    specified by <tt>PropertyTag</tt>. The <tt>PropertyTag</tt> must match one
    of the properties specified in the graph's <tt>PropertyTag</tt>
    template argument.  Vertex and edge properties are shared by all
    subgraphs, so ch