array abstract method
Returns the value for the given key as an MutableArray.
Returns null if a value for the given key does not exist, is not of
the expected type or it is null.
Implementation
@override
MutableArray? array(String key);
Returns the value for the given key as an MutableArray.
Returns null if a value for the given key does not exist, is not of
the expected type or it is null.
@override
MutableArray? array(String key);