Get the name of this action, i.e. "ExtensionState".

Get/Set the name of the context that contains the extension to query.

Get/Set the extension to query.

Specify a server to which to send your commands (x.x.x.x or hostname).
This should match the server name specified in your config file's "host" entry. If you do not specify a server, the proxy will pick the first one it finds -- fine in single-server configurations.