From 32794f60e978c47e4e41dc301fd217f23e951f5f Mon Sep 17 00:00:00 2001
From: Alexander Wang <alex@terrastruct.com>
Date: Tue, 9 May 2023 16:17:59 -0700
Subject: [PATCH] add api func

---
 d2oracle/get.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/d2oracle/get.go b/d2oracle/get.go
index ff9de18eb..af831acd6 100644
--- a/d2oracle/get.go
+++ b/d2oracle/get.go
@@ -7,6 +7,23 @@ import (
 	"oss.terrastruct.com/d2/d2parser"
 )
 
+func GetChildrenIDs(g *d2graph.Graph, absID string) (ids []string, _ error) {
+	mk, err := d2parser.ParseMapKey(absID)
+	if err != nil {
+		return nil, err
+	}
+	obj, ok := g.Root.HasChild(d2graph.Key(mk.Key))
+	if !ok {
+		return nil, fmt.Errorf("%v not found", absID)
+	}
+
+	for _, ch := range obj.ChildrenArray {
+		ids = append(ids, ch.AbsID())
+	}
+
+	return ids, nil
+}
+
 func GetParentID(g *d2graph.Graph, absID string) (string, error) {
 	mk, err := d2parser.ParseMapKey(absID)
 	if err != nil {