How to access Composite Component attribute values in the backing UIComponent?

We can access the Composite Component a开发者_如何学JAVAttribute values (defiled in the interface section), in the implimentation like #{cc.attrs.attributeName}

How can we access this value in the backing component?

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It's just available inside any of the methods by the inherited getAttributes() method which returns a Map<String, Object> with the attribute name as map key and attribute value as map value.

Bar bar = (Bar) getAttributes().get("bar");
// ...