prow/spyglass/lenses/lenses.go
func GetLens(name string) (Lens, error) {
	lens, ok := lensReg[name]
	if !ok {
		return nil, ErrInvalidLensName
	}
	return lens, nil
}
func GetLens(name string) (Lens, error) {
	lens, ok := lensReg[name]
	if !ok {
		return nil, ErrInvalidLensName
	}
	return lens, nil
}
// GetLens returns a Lens by name, if it exists; otherwise it returns an error.