private fun fetchLastKnownLocation() {
        fusedLocationClient.lastLocation.addOnSuccessListener {
            lastLocation = it
            value = lastLocation
        }
}

 private fun getCurrentLocation() {
        val locationRequest = createLocationRequest()
        val builder = LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest)

        val client: SettingsClient = LocationServices.getSettingsClient(activity)
        val task: Task<LocationSettingsResponse> = client.checkLocationSettings(builder.build())

        task.addOnSuccessListener { _ ->
            fusedLocationClient.requestLocationUpdates(locationRequest, locationCallback, null)
        }

        task.addOnFailureListener { exception ->
            when (exception) {
                is ResolvableApiException -> {
                    exception.startResolutionForResult(activity, REQUEST_CHECK_SETTINGS)
                }
                else -> {
                    postValue(null)
                }
            }
        }
}