@Nullable
    public static Compressor forGrpc(io.grpc.Compressor delegate) {
        requireNonNull(delegate, "delegate");
        if (delegate == Identity.NONE) {
            return null;
        }
        return new ForwardingCompressor(delegate);
    }
A {@link Compressor} that forwards to a {@link io.grpc.Compressor}.
grpc/src/main/java/com/linecorp/armeria/internal/common/grpc/ForwardingCompressor.java