code: public void putPersistableBundle(String key, PersistableBundle value) {
          PersistableBundleCompat.putPersistableBundle(bundle, key, value.bundle);
      }
docs: Inserts a PersistableBundle value into the mapping of this Bundle, replacing any existing
  value for the given key.  Either key or value may be null.
  
  @param key   a String, or null
  @param value a Bundle object, or null