// xlistList elements do not exist (targsList and xlistList are nil) or the elements are nil.
// For each partially instantiated generic function operand, the corresponding targsList and
// xlistList elements are the operand's partial type arguments and type expression lists.
func (check *Checker) genericExprList(elist []syntax.Expr) (resList []*operand, targsList [][]Type, xlistList [][]syntax.Expr) {
	if debug {

// xlistList elements do not exist (targsList and xlistList are nil) or the elements are nil.
// For each partially instantiated generic function operand, the corresponding targsList and
// xlistList elements are the operand's partial type arguments and type expression lists.
func (check *Checker) genericExprList(elist []ast.Expr) (resList []*operand, targsList [][]Type, xlistList [][]ast.Expr) {
	if debug {