code: public AnyValue getAsValue(String key) {
  		Object value = getAsObject(key);
  		return new AnyValue(value);
  	}
docs: Converts map element into an AnyValue or returns an empty AnyValue if
  conversion is not possible.
  
  @param key a key of element to get.
  @return AnyValue value of the element or empty AnyValue if conversion is not
  supported.
  
  @see AnyValue
  @see AnyValue#AnyValue(Object)