docs: add comments for all functions

1 files changed, 5 insertions, 2 deletions

diff --git a/util/json_util/json.go b/util/json_util/json.go
index 54e3728a..d2d391bf 100644
--- a/util/json_util/json.go
+++ b/util/json_util/json.go
@@ -1,12 +1,15 @@
+// Package json_util provides JSON utilities including a custom RawMessage type.
 package json_util
 
 import (
 	"errors"
 )
 
+// RawMessage is a custom JSON raw message type that marshals empty slices as "null".
 type RawMessage []byte
 
-// MarshalJSON: Customize json.RawMessage default behavior
+// MarshalJSON customizes the JSON marshaling behavior for RawMessage.
+// Empty RawMessage values are marshaled as "null" instead of "[]".
 func (m RawMessage) MarshalJSON() ([]byte, error) {
 	if len(m) == 0 {
 		return []byte("null"), nil
@@ -14,7 +17,7 @@ func (m RawMessage) MarshalJSON() ([]byte, error) {
 	return m, nil
 }
 
-// UnmarshalJSON: sets *m to a copy of data.
+// UnmarshalJSON sets *m to a copy of the JSON data.
 func (m *RawMessage) UnmarshalJSON(data []byte) error {
 	if m == nil {
 		return errors.New("json.RawMessage: UnmarshalJSON on nil pointer")