The API major and minor version on which the field was deprecated (e.g., "3.5" for major version 3 and minor version 5).

The API major and minor version on which the enum value was deprecated (e.g., "3.5" for major version 3 and minor version 5).

optional bool disallowed_by_default = 189503207;.

optional bool disallowed_by_default_enum = 70100853;.