android/annotations/android/telephony/annotations.xml

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <item name="android.telephony.CarrierConfigManager android.os.PersistableBundle getConfig()">
    <annotation name="android.support.annotation.Nullable" />
  </item>
  <item name="android.telephony.CarrierConfigManager android.os.PersistableBundle getConfigForSubId(int)">
    <annotation name="android.support.annotation.Nullable" />
  </item>
</root>