'Google Protocol Buffers - serialize to byte array

I'm following the tutorial for using Google Protocol Buffers for C#. I don't see an example for converting an object into a byte array - does anyone know how to do that? I've auto-generated a FilePath classes using the protoc compiler and have this so far:

FilePath fp = new FilePath
{
    Path = "TestPath",
    RealTimeMultiple = 5.0f
};

So, I need to know how to properly serialize the fp object without the use of BinaryFormatter.



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