Allow Collection / collect() calls for traversable to ignore keys

[fruitl00p]

Currently we're parsing an XML document into collections with various objects being parsed. This basically looks like:

$testsuites = collect($jUnitSimpleXml->testsuite 
    ? array_map(
        static fn(\SimpleXMLElement $testsuite): ?JunitTestSuite => JunitTestSuite::fromSimpleXml($testsuite),
        iterator_to_array($jUnitSimpleXml->testsuite, preserve_keys: false)
    ) 
    : []
);

One can imagine what the $jUnitSimpleXml->testsuite actually is: a SimpleXML object from parsing a jUnit XML-file. Seems easy enough.
Whilst cleaning this up I wanted to 'laravel way' it a bit more by going to:

collect($jUnitSimpleXml->testsuite)
    ->map(
        static fn ($testsuite): ?JunitTestSuite => JunitTestSuite::fromSimpleXml($testsuite)
    );

However: due to the structure of jUnit XML files multiple <testsuite>-elements can be grouped into a single parent. Thus I have to write:

collect(
    // due to the preserve_keys:false, we can't call collect($jUnitSimpleXml->testsuite) directly
    iterator_to_array($jUnitSimpleXml->testsuite, preserve_keys: false)
)->map(
    static fn ($testsuite): ?JunitTestSuite => JunitTestSuite::fromSimpleXml($testsuite)
);

Which is basically what happens inside Illuminate\Support\Traits\EnumeratesValues::getArrayableItems():

if ($items instanceof Traversable) {
    return iterator_to_array($items);
}

But with the preserve_keys as true(default).

Is there any better way to achieve readable, concise and clear code to go from SimpleXml to a Collection with aforementioned JunitTestSuite-objects without manually performing the iterator_to_array call?

---

for refence a sample jUnit XML file:

<?xml version="1.0" encoding="UTF-8"?>
<testsuites name="PHP_CodeSniffer 3.7.0" errors="0" tests="4465" failures="5">
<testsuite name="web/core/lib/Drupal/Core/Entity/Query/Null/QueryFactory.php" errors="0" tests="2" failures="2">
 <testcase name="PHPCompatibility.Keywords.ForbiddenNamesAsDeclared.nullFound at web/core/lib/Drupal/Core/Entity/Query/Null/QueryFactory.php (3:1)">
  <failure type="error" message="'null' is a reserved keyword as of PHP version 7.0 and should not be used to name a class, interface or trait or as part of a namespace (T_NAMESPACE)"/>
 </testcase>
</testsuite>
<testsuite name="web/core/lib/Drupal/Core/Entity/Query/Null/Query.php" errors="0" tests="1" failures="1">
 <testcase name="PHPCompatibility.Keywords.ForbiddenNamesAsDeclared.nullFound at web/core/lib/Drupal/Core/Entity/Query/Null/Query.php (3:1)">
  <failure type="error" message="'null' is a reserved keyword as of PHP version 7.0 and should not be used to name a class, interface or trait or as part of a namespace (T_NAMESPACE)"/>
 </testcase>
</testsuite>
<testsuite name="web/core/lib/Drupal/Core/Entity/Query/Null/Condition.php" errors="0" tests="1" failures="1">
 <testcase name="PHPCompatibility.Keywords.ForbiddenNamesAsDeclared.nullFound at web/core/lib/Drupal/Core/Entity/Query/Null/Condition.php (3:1)">
  <failure type="error" message="'null' is a reserved keyword as of PHP version 7.0 and should not be used to name a class, interface or trait or as part of a namespace (T_NAMESPACE)"/>
 </testcase>
</testsuite>
</testsuites>

Which should result in a Collection with 3 JunitTestSuite Items after parsing. But will result in 1 item due to preserve_keys.