PHP 7.3 reaches end of support in December 2021 and Adobe Commerce 2.3.x reaches end of support in April 2022. You may want to consider planning your upgrade now to Adobe Commerce 2.4.x and PHP 7.4.x to help maintain PCI compliance.

Code inspection

Web API XML service tag attributes inspections

DI XML preference tag attributes inspections

The Type tag inspections (in the di.xml files) detect empty values or invalid values where a Type values (class, interface, virtual type) are expected.

It also supports recursive inspection for xsi:type="array" arguments.

DI XML plugin type attribute inspections