<documentation title="Valid Class Name">
    <standard>
    <![CDATA[
    Class names must be written in Pascal case. This means that it starts with a capital letter, and the first letter of each word in the class name is capitalized. Only letters and numbers are allowed.
    ]]>
    </standard>
    <code_comparison>
        <code title="Valid: Class name starts with a capital letter.">
        <![CDATA[
class <em>PascalCaseStandard</em>
{
}
        ]]>
        </code>
        <code title="Invalid: Class name does not start with a capital letter.">
        <![CDATA[
class <em>notPascalCaseStandard</em>
{
}
        ]]>
        </code>
    </code_comparison>
    <code_comparison>
        <code title="Valid: Class name contains only letters and numbers.">
        <![CDATA[
class <em>PSR7Response</em>
{
}
        ]]>
        </code>
        <code title="Invalid: Class name contains underscores.">
        <![CDATA[
class <em>PSR7_Response</em>
{
}
        ]]>
        </code>
    </code_comparison>
</documentation>