Is there a way to order children of post?

there is a main post:

$parent = wp_insert_post([
    'post_type' = 'parent',
    'post_name' = 'test parent'
]);

and the children:

$child1 = wp_insert_post([
    'post_type' = 'child',
    'post_name' = 'test child1'
]);
$child2 = wp_insert_post([
    'post_type' = 'child',
    'post_name' = 'test child2'
]);
$child3 = wp_insert_post([
    'post_type' = 'child',
    'post_name' = 'test child3'
]);

lets match them:

wp_update_post(
    array('ID' = $child1, 'post_parent' = $parent)
);
wp_update_post(
    array('ID' = $child2, 'post_parent' = $parent)
);
wp_update_post(
    array('ID' = $child3, 'post_parent' = $parent)
);

finally to list them:

$children = get_children(['post_parent' = $parent]);

this is theoretically seems to be OK, but it only describes the relation itself, not the order. What if I want to order the children? How to do it?