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-rw-r--r--libqpdf/QPDF_Null.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/libqpdf/QPDF_Null.cc b/libqpdf/QPDF_Null.cc
index a82f23c0..0b59f5c9 100644
--- a/libqpdf/QPDF_Null.cc
+++ b/libqpdf/QPDF_Null.cc
@@ -50,5 +50,6 @@ QPDF_Null::unparse()
JSON
QPDF_Null::getJSON(int json_version)
{
+ // If this is updated, QPDF_Array::getJSON must also be updated.
return JSON::makeNull();
}