Allow attaching completion handler for updating context. #81
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About the changes
This PR adds optional completion handler to
updateContext
method. This is needed to receive a callback once update is complete.My use-case:
I need to receive updated configuration after user logs in (several user profile fields are set in context). Those fields can determine A/B test variants and feature flags user can receive. To achieve this, I call updateContext(completion:) before letting user in the app after logging in.
Discussion points
This addition is non-breaking, as parameter has default value of nil.
I also removed
stop
method call in this function, asstop
method is already called instart
function. However, this change is optional, I can put it back if maintainers think it's good for consistency.