X-Git-Url: https://gerrit.automotivelinux.org/gerrit/gitweb?a=blobdiff_plain;f=src%2Fwrap-json.md;h=8f7693c3a5812836550f689b08bac9cbef8ef969;hb=6b0b9047228c0da38458217c28190ff0c28e73a9;hp=a86d2a507ac937c1957a7716cdc159a22a3193c9;hpb=c8558c8a28966110aa3a356f95d3c60afe32b64a;p=src%2Fapp-framework-binder.git

diff --git a/src/wrap-json.md b/src/wrap-json.md
index a86d2a50..8f7693c3 100644
--- a/src/wrap-json.md
+++ b/src/wrap-json.md
@@ -75,6 +75,19 @@ arguments.
 
 :   Like 'y' but output is base64.
 
+`y?`, `Y?` (byte array or null) \[const uint8_t \*, size\_t\]
+
+:   Like 'y' or 'Y' but allows to output a JSON null value
+    either when the buffer is *NULL* or when the size is *0*.
+
+`y*`, `y*` (optional byte array) \[const uint8_t \*, size\_t\]
+
+:   Like 'y' or 'Y' but do not put JSON value
+    either when the buffer is *NULL* or when the size is *0*.
+    This format can only be used inside an object or an array. If used
+    inside an object, the corresponding key is additionally suppressed
+    when the value is omitted. See below for an example.
+
 `n` (null)
 
 :   Output a JSON null value. No argument is consumed.