   use Protobuf, syntax: :proto2
 
   @type t :: %__MODULE__{
-    name: String.t
-  }
+          name: String.t()
+        }
   defstruct [:name]
 
   field :name, 1, optional: true, type: :string

  use Protobuf, syntax: :proto2

  @type t :: %__MODULE__{
    group_field: integer
  }
  defstruct [:group_field]

  field :group_field, 9, optional: true, type: :int32

  use Protobuf, map: true, syntax: :proto2

  @type t :: %__MODULE__{
          key: integer,
          value: My.Test.Reply.t()
        }
  defstruct [:key, :value]

  field :key, 1, optional: true, type: :sint64
