<p>
<code>getParent</code> returns the parent <code>Element</code> if
this node supports the parent relationship or null if it is the root
element or does not support the parent relationship.
</p>
<p>
This method is an optional feature and may not be supported for all
<code>Node</code> implementations.
</p>
@return the parent of this node or null if it is the root of the tree or
the parent relationship is not supported.
<p> <code>getParent</code> returns the parent <code>Element</code> if this node supports the parent relationship or null if it is the root element or does not support the parent relationship. </p>
<p> This method is an optional feature and may not be supported for all <code>Node</code> implementations. </p>
@return the parent of this node or null if it is the root of the tree or the parent relationship is not supported.