Some work around bindings. it may do not compile

binding/binding.go

@@ -0,0 +1,34 @@
+package binding
+
+import (
+	"encoding/json"
+	"encoding/xml"
+	"io"
+)
+
+type (
+	Binding interface {
+		Bind(io.Reader, interface{}) error
+	}
+
+	// JSON binding
+	jsonBinding struct{}
+
+	// JSON binding
+	xmlBinding struct{}
+)
+
+var (
+	JSON = jsonBinding{}
+	XML  = xmlBinding{}
+)
+
+func (_ jsonBinding) Bind(r io.Reader, obj interface{}) error {
+	decoder := json.NewDecoder(r)
+	return decoder.Decode(&obj)
+}
+
+func (_ xmlBinding) Bind(r io.Reader, obj interface{}) error {
+	decoder := xml.NewDecoder(r)
+	return decoder.Decode(&obj)
+}