extendsClause property
Returns the extends
clause for this class, or null
if the class
does not extend any other class.
In valid code only ClassDeclaration can specify it.
Implementation
@override
ExtendsClauseImpl? get extendsClause => _extendsClause;
Implementation
set extendsClause(ExtendsClauseImpl? extendsClause) {
_extendsClause = _becomeParentOf(extendsClause);
}