 allows to specify maximum index of element
that will be stored. Correct number will improve performance, but semantic
is always the same.

<hr>

<pre>
vector_property_map(const vector_property_map&amp;)
</pre>
Copy constructor. The copy will share the same data and changes
made to it will affect original property map.

<hr>

<pre>
vector_property_map&amp; operator=(const vector_property_map&amp;)
</pre>
Assignment operator. The semantic is the same as for copy constructor.

<hr>

<pre>
reference operator[]