Send Processing Order email only for BACS

<?php
add_filter('woocommerce_email_enabled_customer_processing_order', 'bacs_processing_order_email', 10, 2);
function bacs_processing_order_email( $is_enabled, $order) {
  if ($order->payment_method != 'bacs') {
      return false;
  }
  return $is_enabled;
}