func safeMetadataInsert(resource *gocf.Resource, key string, value interface{}) {
if nil == resource.Metadata {
resource.Metadata = make(map[string]interface{}, 0)
}
resource.Metadata[key] = value
}
func safeAppendDependency(resource *gocf.Resource, dependencyName string) {
if nil == resource.DependsOn {
resource.DependsOn = []string{}
}
resource.DependsOn = append(resource.DependsOn, dependencyName)
}