public override void Write(Utf8JsonWriter writer, TMessage value, JsonSerializerOptions options)
{
int nanos;
long seconds;
if (value is Timestamp timestamp)
{
nanos = timestamp.Nanos;
seconds = timestamp.Seconds;
}
else
{
nanos = (int)value.Descriptor.Fields[Timestamp.NanosFieldNumber].Accessor.GetValue(value);
seconds = (long)value.Descriptor.Fields[Timestamp.SecondsFieldNumber].Accessor.GetValue(value);
}
var text = Legacy.GetTimestampText(nanos, seconds);
writer.WriteStringValue(text);
}