public String getString(String key, String defaultValue) {
        return PersistableBundleCompat.getString(bundle, key, defaultValue);
    }
public String getString(String key, String defaultValue) {
        return PersistableBundleCompat.getString(bundle, key, defaultValue);
    }
public String getString ( String key , String defaultValue ) { return PersistableBundleCompat . getString ( bundle , key , defaultValue ) ; }
Returns the value associated with the given key, or defaultValue if no mapping of the desired
type exists for the given key or if a null value is explicitly associated with the given
key.

@param key          a String, or null
@param defaultValue Value to return if key does not exist or if a null value is associated
with the given key.
@return the String value associated with the given key, or defaultValue if no valid String
object is currently mapped to that key.
Returns the value associated with the given key or defaultValue if no mapping of the desired type exists for the given key or if a null value is explicitly associated with the given key .