File: vendor/squizlabs/php_codesniffer/src/Standards/PSR12/Docs/Classes/OpeningBraceSpaceStandard.xml

<documentation title="Opening Brace Space">
    <standard>
    <![CDATA[
    The opening brace of an object-oriented construct must not be followed by a blank line.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: No blank lines after opening brace.">
        <![CDATA[
class Foo
{<em></em>
    public function bar()
    {
        // Method content.
    }
}
        ]]>
        </code>
        <code title="Invalid: Blank line after opening brace.">
        <![CDATA[
class Foo
{
<em></em>
    public function bar()
    {
        // Method content.
    }
}
        ]]>
        </code>
    </code_comparison>
</documentation>