errors.go
func AsErrorList(err error) ErrorList {
	if list, ok := err.(ErrorList); ok {
		return list
	}
	return ErrorList{err}
}
func AsErrorList(err error) ErrorList {
	if list, ok := err.(ErrorList); ok {
		return list
	}
	return ErrorList{err}
}
func AsErrorList ( err error ) ErrorList { if list , ok := err . ( ErrorList ) ; ok { return list } return ErrorList { err } }
// AsErrorList checks if err is already an ErrorList
// and returns it if this is the case.
// Else an ErrorList with err as element is created.
// Useful if a function potentially returns an ErrorList as error
// and you want to avoid creating nested ErrorLists.
AsErrorList checks if err is already an ErrorList and returns it if this is the case . Else an ErrorList with err as element is created . Useful if a function potentially returns an ErrorList as error and you want to avoid creating nested ErrorLists .