Function retsJustErr

testdata/src/go.uber.org/errorreturn/errorreturn.go:31–33

this tests that the default nilability for error returns is `nilable`

()

// this tests that the default nilability for error returns is `nilable`
func retsJustErr() error {
	return nil
}

// this tests that the default nilability for error params is `nilable`
func takesJustErr(e error) {