Q: What is the difference between a Template definition and instance?
A: There are two parts to a Template
This metric will will contain all the member Metrics with their default values/properties,
as well as any Parameters with their default values. This metric is always only published
in the NBIRTH message
This template_samples.txt (see attachment) contains some sample template structures (in JSON) as well as some Java code for creating a Template. These should help show the basic Template structure and contain the important fields of a Template Definition and Instance. However, they are just references expressed in JSON, not actual protobuf representations (which may be a bit more verbose)