diff --git a/.idea/libraries/Go_SDK.xml b/.idea/libraries/Go_SDK.xml
new file mode 100644
index 0000000..22c27bf
--- /dev/null
+++ b/.idea/libraries/Go_SDK.xml
@@ -0,0 +1,10 @@
+<component name="libraryTable">
+  <library name="Go SDK">
+    <CLASSES>
+      <root url="file:///usr/local/go/src" />
+    </CLASSES>
+    <SOURCES>
+      <root url="file:///usr/local/go/src" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/feature_adapter.go b/feature_adapter.go
index f65038f..e70fa6b 100644
--- a/feature_adapter.go
+++ b/feature_adapter.go
@@ -81,6 +81,10 @@ func UnmarshalAnyFromString(str string) (Any, error) {
 	return nil, iter.Error
 }
 
+// jsoniterator.Marshal is an adapter to json.Marshal
+
+// Marshal returns the JSON encoding of v, adapts to json/encoding API
+
 func Marshal(v interface{}) ([]byte, error) {
 	buf := &bytes.Buffer{}
 	stream := NewStream(buf, 512)