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$scope.onShow = function() {
  // code to execute when the component is shown/created atin the client.    
}

onHide: which will be called every time the component gets hidden

$scope.onHide = function() {
  // code to execute when the component is hidden/destroyed atin the client.    
}

Any code the component wants to execute server-side for show/hide can be added to these two functions by:
- defining them in the internalApi section of the component's .spec file
- defining them in the server side scripting file of the component.

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