public static <T> void mergeFrom(CodedInput input, T message, Schema<T> schema)
            throws IOException
    {
        final GraphCodedInput graphInput = new GraphCodedInput(input);
        schema.mergeFrom(graphInput, message);
        input.checkLastTagWas(0);
    }
Merges the {@code message} from the {@link CodedInput} using the given {@code schema}.
protostuff-core/src/main/java/io/protostuff/GraphIOUtil.java