Removing subnodes by setting them to null
-----
<?php
function
foo (
    Bar $foo
        = null,
    Foo $bar) : baz
{}

function
()
: int
{};

class
Foo
extends
Bar
{
    public
    function
    foo() : ?X {}

    public
      $prop = 'x'
    ;

    use T {
        T
        ::
        x
        as
        public
        y
        ;
    }
}

$foo [ $bar ];
exit ( $bar );
$foo
? $bar :
$baz;
[ $a => $b
, $c => $d];

yield
$foo
=>
$bar;
yield
$bar;

break
2
;
continue
2
;

foreach(
    $array
as
    $key
 =>
    $value
) {}

if
($x)
{
}

else {}

return
$val
;
static
  $x
  =
  $y
;

try {} catch
  (X $y)
  {}
finally
{}
-----
$stmts[0]->returnType = null;
$stmts[0]->params[0]->default = null;
$stmts[0]->params[1]->type = null;
$stmts[1]->expr->returnType = null;
$stmts[2]->extends = null;
$stmts[2]->stmts[0]->returnType = null;
$stmts[2]->stmts[1]->props[0]->default = null;
$stmts[2]->stmts[2]->adaptations[0]->newName = null;
$stmts[3]->expr->dim = null;
$stmts[4]->expr->expr = null;
$stmts[5]->expr->if = null;
$stmts[6]->expr->items[1]->key = null;
$stmts[7]->expr->key = null;
$stmts[8]->expr->value = null;
$stmts[9]->num = null;
$stmts[10]->num = null;
$stmts[11]->keyVar = null;
$stmts[12]->else = null;
$stmts[13]->expr = null;
$stmts[14]->vars[0]->default = null;
$stmts[15]->finally = null;
-----
<?php
function
foo (
    Bar $foo,
    $bar)
{}

function
()
{};

class
Foo
{
    public
    function
    foo() {}

    public
      $prop
    ;

    use T {
        T
        ::
        x
        as
        public
        ;
    }
}

$foo [];
exit ();
$foo
?:
$baz;
[ $a => $b
, $d];

yield
$bar;
yield;

break;
continue;

foreach(
    $array
as
    $value
) {}

if
($x)
{
}

return;
static
  $x
;

try {} catch
  (X $y)
  {}
-----
<?php

namespace
A
    {
    }
-----
$stmts[0]->name = null;
-----
<?php

namespace
    {
    }