func main() {
	getMongoURIEnvVar(mongoURIName)
	if client == nil && mongoURI != "" {
		connectToMongoDB()
	}
	lambda.Start(handler)
}
	func main() {
	getMongoURIEnvVar(mongoURIName)
	if client == nil && mongoURI != "" {
	connectToMongoDB()
	}
	lambda.Start(handler)
	}