<documentation title="Cast Whitespace">
    <standard>
    <![CDATA[
    Casts should not have whitespace inside the parentheses.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: No spaces.">
        <![CDATA[
$foo = (<em></em>int<em></em>)'42';
]]>
        </code>
        <code title="Invalid: Whitespace used inside parentheses.">
        <![CDATA[
$foo = (<em> </em>int<em> </em>)'42';
]]>
        </code>
    </code_comparison>
</documentation>