[CodingStyle] Inline private constant, that is used only once

[TomasVotruba]

Some class constants are decoupled just fore its own sake.

The constants should be reusable static parts of the code, so it's used just once and one place.

Apply only for Scalar values, skip arrays, as they would clutter the code

class SomeClass
{
-    private const TYPE = 'SomeClass';

    public function isThisType($variable)
    {
-        return $this->checkType($variable, self::TYPE);
+        return $this->checkType($variable, 'SomeClass');
    }
}

[TomasVotruba]

Not priority ATM, too opinonated