func (r *LambdaDeploymentReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
    ld := &LambdaDeployment{}

    err := r.Get(ctx, req.NamespacedName, ld)
    switch e := err; {
    case apierrors.IsNotFound(e):
        // This corresponds to a DELETE action so we can ignore it
        log.Println("LambdaDeployment is deleted... Doing nothing?")
        return ctrl.Result{}, nil
    case e != nil:
        log.Printf("Could not GET the LambdaDeployment: %s", err)
        return ctrl.Result{}, nil
    }

    // This is the "lambda.Client" from "github.com/aws/aws-sdk-go-v2/service/lambda"
    _, err = r.LambdaClient.UpdateFunctionCode(ctx, &lambda.UpdateFunctionCodeInput{
        FunctionName: &ld.Spec.FunctionARN, // The ARN is the input to "FunctionName" parameter confusingly
        S3Bucket:     "lambda-zips",
        S3Key:        fmt.Sprintf("%s/%s.zip", ld.Spec.FunctionName, ld.Spec.Commit),
    })


    return ctrl.Result{}, nil
}