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For examples of extensions using this hook, see Category:BSNamespaceManagerBeforeSetUsernamespaces extensions . Category:Extension hooks#BSNamespaceManagerBeforeSetUsernamespaces Category:Undocumented extension hooks#BSNamespaceManagerBeforeSetUsernamespaces Category:Extension hooks provided by BlueSpiceNamespaceManager Category:Extension hooks#BSNamespaceManagerBeforeSetUsernamespaces Category:Undocumented extension hooks#BSNamespaceManagerBeforeSetUsernamespaces Category:Extension hooks provided by BlueSpiceNamespaceManager