Fragment A Observing Livedata

FragmentA

 viewModel.vendor.observe(viewLifecycleOwner) {
            it?.let { result ->
                when (result) {
                    is Result.Success -> {
                      // do something on success
                    }
                    is Result.Error -> {
                      // print stack trace
                    }
                    is Result.Loading -> {
                      // dismiss loading
                    }
                }
            }
        }