0(1) element: null
1(2) element: PyTypeParameter
2(3) WRITE ACCESS: T
3(4) element: PySubscriptionExpression
4(5) READ ACCESS: list
5(6) READ ACCESS: T
6(7) WRITE ACCESS: x
7(8) READ ACCESS: T
8(9) element: PyReturnStatement
9(10) element: PySubscriptionExpression
10(11) READ ACCESS: x
11() element: null