ProtobufAPIVersion_2
An empty protocol that encodes the version of the runtime library.
protocol ProtobufAPIVersion_2Browse conforming typesThis protocol will be replaced with one containing a different version number any time that breaking changes are made to the Swift Protobuf API. Combined with the protocol below, this lets us verify that generated code is never compiled against a version of the API with which it is incompatible.
The version associated with a particular build of the compiler is defined as Version.compatibilityVersion in protoc-gen-swift. That version and this version must match for the generated protos to be compatible, so if you update one, make sure to update it here and in the associated type below.