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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _handle_array_ref(self, node, scope, ctxt, stream):
 """Handle ArrayRef nodes :node: TODO :scope: TODO :ctxt: TODO :stream: TODO :returns: TODO """

        ary = self._handle_node(node.name, scope, ctxt, stream)
        subscript = self._handle_node(node.subscript, scope, ctxt, stream)
        return ary[fields.PYVAL(subscript)]