I found several nice samples on the net that referred to a method called
but there isn't one in the latest distro so I've added the following to my build:
/// Writes the property name/value pair on a Json object.
/// <param name="name">The name of the property.</param>
/// <param name="value">The value of the property.</param>
public void WriteProperty(string name, object value)
It seems to do the job very well and makes the app code much more terse.