         self.constants = constants
         self.expressions = expressions
         self.children = children
+
+        _originalExpressions = expressions
 
         super.init()
 

        }
        return [viewController]
    }

    public init(
        view: UIView? = nil,

            child.removeFromParent()
        }

        for (name, expression) in node._originalExpressions where _originalExpressions[name] == nil {
            _originalExpressions[name] = expression
        }
        expressions = _originalExpressions
        _getters.removeAll()
        _cachedExpressions.removeAll()
        overrideExpressions()
