diff --git a/docs/data/data-core-editor.md b/docs/data/data-core-editor.md
index 5cc8768992fe72..b72ef2ad70c176 100644
--- a/docs/data/data-core-editor.md
+++ b/docs/data/data-core-editor.md
@@ -565,6 +565,20 @@ exist.
 
 Root client ID, if exists
 
+### getBlockHierarchyRootClientId
+
+Given a block client ID, returns the root of the hierarchy from which the block is
+nested, return the block itself for root level blocks.
+
+*Parameters*
+
+ * state: Editor state.
+ * clientId: Block from which to find root client ID.
+
+*Returns*
+
+Root client ID
+
 ### getAdjacentBlockClientId
 
 Returns the client ID of the block adjacent one at the given reference