ClusterPrePermissions
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Open Settings if previously denied
If user denies access in system dialog and then tries to use the function that requires permission. ClisterPermissions will not show dialog and return a negative result without interaction.
It is logical in this situation to show the pre-permission dialog and if user tap "Give access" open Settings (UIApplicationOpenSettingsURLString)? Developer won't have to implement whole opening of UIApplicationOpenSettingsURLString and leave it to ClusterPermissions.