From a98e5e98cbfb6e824fb57eb5e7eac1dc6cd4532b Mon Sep 17 00:00:00 2001
From: Matthew Avaylon <mavaylon1@berkeley.edu>
Date: Wed, 31 Jul 2024 10:08:55 -0700
Subject: [PATCH] Minimum Support for Appending References in Hdmf-Zarr (#1157)

* Minimum Support

* Update CHANGELOG.md
---
 CHANGELOG.md           | 5 +++++
 src/hdmf/data_utils.py | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4d77fbdad..4a6369094 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # HDMF Changelog
 
+## HDMF 3.14.4 (Upcoming)
+
+### Enhancements
+- Added support to append to a dataset of references for HDMF-Zarr. @mavaylon1 [#1157](https://github.com/hdmf-dev/hdmf/pull/1157)
+
 ## HDMF 3.14.3 (July 29, 2024)
 
 ### Enhancements
diff --git a/src/hdmf/data_utils.py b/src/hdmf/data_utils.py
index 798a40973..91400da84 100644
--- a/src/hdmf/data_utils.py
+++ b/src/hdmf/data_utils.py
@@ -18,7 +18,8 @@
 from .utils import docval, getargs, popargs, docval_macro, get_data_shape
 
 def append_data(data, arg):
-    if isinstance(data, (list, DataIO)):
+    from hdmf.backends.hdf5.h5_utils import HDMFDataset
+    if isinstance(data, (list, DataIO, HDMFDataset)):
         data.append(arg)
         return data
     elif type(data).__name__ == 'TermSetWrapper': # circular import