if (let_ivar && !psi_impl_get_arg(scope->impl, let_ivar)) {
data->error(data, let_var->token, PSI_WARNING,
"Unknown variable '%s' in `let` statement of implementation '%s'",
if (let_ivar && !psi_impl_get_arg(scope->impl, let_ivar)) {
data->error(data, let_var->token, PSI_WARNING,
"Unknown variable '%s' in `let` statement of implementation '%s'",