int 1 for true.
	 */
	public static $default_sync_sender_enabled = 1; // Should send incremental sync items.

	/**
	 * Default for enabling Full Sync.
	 *
	 * @var int 1 for true.
	 */
	public static $default_full_sync_sender_enabled = 1; // Should send full sync items.

	/**
	 * Default Full Sync config
	 *
	 * @var array list of module names.
	 */
	public static $default_full_sync_config = array(
		'comments'           => 1,
		'constants'          => 1,
		'functions'          => 1,
		'options'            => 1,
		'posts'              => 1,
		'term_relationships' => 1,
		'terms'              => 1,
		'themes'             => 1,
		'updates'            => 1,
		'users'              => 1,
	);

	/**
	 * Default Full Sync max objects to send on a single request.
	 *
	 * @var array list of module => max.
	 */
	public static $default_full_sync_limits = array(
		'comments'           => array(
			'chunk_size' => 100,
			'max_chunks' => 10,
		),
		'posts'              => array(
			'chunk_size' => 100,
			'max_chunks' => 1,
		),
		'term_relationships' => array(
			'chunk_size' => 1000,
			'max_chunks' => 10,
		),
		'terms'              => array(
			'chunk_size' => 1000,
			'max_chunks' => 10,
		),
		'users'              => array(
			'chunk_size' => 100,
			'max_chunks' => 10,
		),
	);

	/**
	 * Default for enabling dedicated Sync flow.
	 *
	 * @var int Bool-ish. Default 0.
	 */
	public static $default_dedicated_sync_enabled = 0;

	/**
	 * Default for enabling custom queue table for Sync.
	 *
	 * @var int Bool-ish. Default 0.
	 */
	public static $default_custom_queue_table_enabled = 0;
}