False sniffs with short in-line anonymous functions

My understanding is that short, in-line, anonymous functions are permissible under Drupal's coding standards. An example of this is lines 220-221 from migrate/src/Tests/MigrateTestBase.php:

    /** @var \Drupal\migrate\Entity\MigrationInterface $migration */
    $destination = array_map(function() { return NULL; }, $migration->getDestinationPlugin()->getIds());

This code results in the following sniff result, each of which in this case I think is a false positive sniff:

FILE: ...Webs\tcm-dru8\core\modules\migrate\src\Tests\MigrateTestBase.php
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FOUND 4 ERRORS AFFECTING 1 LINE
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 221 | ERROR | [x] Opening brace must be the last content on the line
     |       |     (Generic.Functions.OpeningFunctionBraceKernighanRitchie.ContentAfterBrace)
 221 | ERROR | [x] There should be no white space after an opening
     |       |     "{"
     |       |     (Drupal.WhiteSpace.OpenBracketSpacing.OpeningWhitespace)
 221 | ERROR | [x] There should be no white space before a closing
     |       |     "}"
     |       |     (Drupal.WhiteSpace.CloseBracketSpacing.ClosingWhitespace)
 221 | ERROR | [x] Closing brace must be on a line by itself
     |       |     (Drupal.WhiteSpace.ScopeClosingBrace.Line)
----------------------------------------------------------------------
PHPCBF CAN FIX THE 4 MARKED SNIFF VIOLATIONS AUTOMATICALLY