Now `System.Buffers.BuffersExtensions` have method to write ReadOnlySpan to IBufferWriter. Should we add similar method for `ReadOnlySequence`? ```cs public static class BuffersExtensions { public static void Write<T>(this IBufferWriter<T> bufferWriter, ReadOnlySpan<T> source); // new public static void Write<T>(this IBufferWriter<T> bufferWriter, ReadOnlySequence<T> source); } ```