nrf_pwr_mgmt_run() required with DFU?

Hello,

I have a custom application and bootloader with DFU support. We have been able to download application updates using the DFU. Today I noticed that I am not calling nrf_pwr_mgmt_run() in the main loop. nrf_pwr_mgmt_init() is being called and a handler is registered. It appears that calling run is not required.

Is there something I am missing in regards to DFU operation?