ends.</p>
<p>This is not a <a href="dart-core/List-class.html">List</a> implementation. Despite its name, this class does not
implement the <a href="dart-core/List-class.html">List</a> interface. It does not allow constant time lookup by
index.</p>
<p>Because the elements themselves contain the links of this linked list,
each element can be in only one list at a time. To add an element to another
list, it must first be removed from its current list (if any).</p>
<p>In return, each element knows its own plac