Add refresh method to Resources?

[nealrichardson]

For when you know the object you have is no longer up to date with what's on the server, or you want to make sure it is.

Resources should know their base url and guid is in their data, so I'd expect we could have a method on the base Resource class that should work for all subclasses.

[tdstein]

Resolved by #236

[nealrichardson]

FTR #236 is not what I meant by "refresh" here, but we can revisit when the need arises.

[tdstein]

Whoops. I failed to read the description carefully.

Unfortunately, this abstraction isn't as clean as I had hoped. The HTTP method varies by resource. There are variations of PUT, PATCH, and GET. Also, some require additional business logic to accommodate API behavior.