{"ast_node_type":"variable","tokens":[{"end":69,"kind":"keyword","start":0,"text":"let"}]}
            let unsigned_type = native_int_type.to_unsigned(self.cx);
            // NOTE: cast low to its unsigned type in order to perform a logical right shift.
            let casted_low = self.context.new_cast(self.location, self.low(a), unsigned_type);