release/pivnetrelease.go
func (r *PivnetRelease) BoshReleaseOrEmpty(name string) *BoshRelease {
	br := r.BoshRelease[name]
	if br == nil {
		br = emptyBoshRelease
	}
	return br
}
func (r *PivnetRelease) BoshReleaseOrEmpty(name string) *BoshRelease {
	br := r.BoshRelease[name]
	if br == nil {
		br = emptyBoshRelease
	}
	return br
}
// BoshReleaseOrEmpty returns the named BOSH release from this pivnet release
// if it exists, otherwise emptyBoshRelease is returned.