Bypass automatic case alterations for labels

Hi. I can't figure out how to bypass the case alterations that are happening for resource names.

For example

public static ?string $label = 'VAT Invoices';

public static ?string $label = 'VAT Invoices';

public static ?string $label = 'VAT Invoices';

public static ?string $label = 'VAT Invoices';

is automatically changed to 'Vat Invoices'.