=head1 NAMEXML::DOM::AttDef - A single XML attribute definition in an ATTLIST in XML::DOM =head1 DESCRIPTIONXML::DOM::AttDef extends L<XML::DOM::Node>, but is not part of the DOM Level 1specification.Each object of this class represents one attribute definition in an AttlistDecl.=head2 METHODS=over 4=item getNameReturns the attribute name.=item getDefaultReturns the default value, or undef.=item isFixedWhether the attribute value is fixed (see #FIXED keyword.)=item isRequiredWhether the attribute value is required (see #REQUIRED keyword.)=item isImpliedWhether the attribute value is implied (see #IMPLIED keyword.)=back