1Named arguments
2-----
3<?php
4foo(
5    a: $b,
6);
7-----
8$stmts[0]->expr->args[0]->name = null;
9-----
10<?php
11foo(
12    $b,
13);
14-----
15<?php
16foo(
17    $b,
18);
19-----
20$stmts[0]->expr->args[0]->name = new Node\Identifier('a');
21-----
22<?php
23foo(
24    a: $b,
25);
26-----
27<?php
28foo(
29    a:
30    $b,
31);
32-----
33$stmts[0]->expr->args[0]->name = new Node\Identifier('XYZ');
34-----
35<?php
36foo(
37    XYZ:
38    $b,
39);