Update

Author: MatheusDS4

src/as3-guide/serialization.md

@@ -4,7 +4,7 @@ Whack allows easily serializing and deserializing classes.
 
 > Note that variables should not hold functions in the serialization patterns.
 
-> Note that the constructor of serializable classes should consist of optional parameters only, as in:
+> Note that the constructor of serializable classes must be optional. For instance:
 >
 > ```
 > package
@@ -21,6 +21,8 @@ Whack allows easily serializing and deserializing classes.
 > }
 > ```
 
+> Note that interfaces are not allowed in serialization.
+
 ## JSON
 
 JSON data can be serialized with `JSON.stringify(val)`, and for deserializing into a specific class you may use `JSON.parse(str, T)`.