@Override
    protected Set<Entry> entries() {
        return ImmutableSet.of(
                new Entry("gproto", create("application", "grpc+proto"), create("application", "grpc")),
                new Entry("gjson", create("application", "grpc+json")),
                new Entry("gproto-web", create("application", "grpc-web+proto"),
                          create("application", "grpc-web")),
                new Entry("gjson-web", create("application", "grpc-web+json")),
                new Entry("gproto-web-text", create("application", "grpc-web-text+proto"),
                          create("application", "grpc-web-text")));
    }
{@link SerializationFormatProvider} that provides the gRPC-related {@link SerializationFormat}s.
grpc-protocol/src/main/java/com/linecorp/armeria/internal/common/grpc/protocol/GrpcSerializationFormatProvider.java