Beacons.java

Awareness.SnapshotApi.getBeaconState(mGoogleApiClient, BEACON_TYPE_FILTERS)
                .setResultCallback(new ResultCallback<BeaconStateResult>() {
                    @Override
                    public void onResult(@NonNull BeaconStateResult beaconStateResult) {
                        if (beaconStateResult.getStatus().isSuccess()) {
                            BeaconState beaconState = beaconStateResult.getBeaconState();
                            List<BeaconState.BeaconInfo> beaconInfos = beaconState.getBeaconInfo();
                            // do stuff with beacon information!
                        }
                    }
                });