To make sure anyone using the capabilities originally from the agent have to know what they're dealing with, make the member private and make accessors that spell out explicitly the important parts. This is the last step towards addressing the leftover comment from aosp/1958906. Bug: 238139913 Test: FrameworksNetTests CtsNetTestCases Change-Id: I9fc1986c59726212acfc2ad921745c8bbc424035