Adding a field with a default value

[kirill09]

Hi. When adding a test field with a default value (false). Binary view this field is added.
This behavior is different from the behavior in java.
https://developers.google.com/protocol-buffers/docs/proto3#default
Example:
{"test": null}
dart
[186, 6, 0]
java
[-70, 6, 0]
That's right, expected result.

{"test": true}
dart
[186, 6, 2, 40, 1]
java
[-70, 6, 2, 40, 1]
That's right, expected result.

{"test": false}
dart
[186, 6, 2, 40, 0]
java
[-70, 6, 0]
in java the correct result in dart is not