deserializing lists

example.py

@@ -3,20 +3,33 @@
 
 import betterproto
 from dataclasses import dataclass
+from typing import List
+
+@dataclass
+class Baz(betterproto.Message):
+    a: str = betterproto.string_field(1)
 
 @dataclass
 class Foo(betterproto.Message):
     x: int = betterproto.int32_field(1)
     y: float = betterproto.double_field(2)
+    z: List[Baz] = betterproto.message_field(3)
 
 @dataclass
 class Bar(betterproto.Message):
     foo1: Foo = betterproto.message_field(1)
     foo2: Foo = betterproto.message_field(2)
+    packed: List[int] = betterproto.int64_field(3)
 
 # Serialization has not been changed yet. So nothing unusual here
-buffer = bytes(Bar(foo1 = Foo(1, 2.34), foo2 = Foo(3, 4.56)))
+buffer = bytes(
+    Bar(
+        foo1=Foo(1, 2.34),
+        foo2=Foo(3, 4.56, [Baz("Hi"), Baz("There")]),
+        packed=[5, 3, 1]
+    )
+)
 
 # Native deserialization happening here
 bar = Bar().parse(buffer)
-print(bar)
+print(bar)