* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
public NotificationChain basicSetP_expression_statement(ExpressionStatementAst newP_expression_statement, NotificationChain msgs) {
ExpressionStatementAst oldP_expression_statement = p_expression_statement;
p_expression_statement = newP_expression_statement;
if (eNotificationRequired()) {
ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, QvtAstPackage.SWITCH_ELSE_AST__PEXPRESSION_STATEMENT, oldP_expression_statement, newP_expression_statement);
if (msgs == null) msgs = notification; else msgs.add(notification);
}