WC Vendors - Change Product Enquiry to send to vendor and another email address

functions.php

/* WC Vendors - Set Product Enquiry to send to two emails.  First being the vendor, second being an email address you set in the code below */
remove_filter( 'product_enquiry_send_to', array( 'WCV_Vendor_Shop', 'product_enquiry_compatibility' ), 10, 2 ); // Removes the WC Vendors Filter
add_filter( 'product_enquiry_send_to', 'product_enquiry_send_to_custom', 10, 2 ); // Adds your new filter and specifies the function name to call
function product_enquiry_send_to_custom( $send_to, $product_id )	{
		$author_id = get_post( $product_id )->post_author;
		if ( WCV_Vendors::is_vendor( $author_id ) ) {
			$send_to = get_userdata( $author_id )->user_email . ', SOMEONE@ELSE.COM'; // Change the email here.  Leave the comma and space because that is how we're sending two email addresses.
		}
		return $send_to;
	}