Maybe dead code

[tinchodias]

I'm listing some code to look at.

There is this class that seems to implement Null pattern:

Object subclass: #SpartaUnimplementedPathBuilder
	uses: TSpartaPathBuilder
	instanceVariableNames: ''
	classVariableNames: ''
	package: 'Sparta-Core-Builders - Unimplemented'

Only referenced from SpartaCanvas:

pathBuilderClass
	<return: #'TSpartaPathBuilder class'>

	true ifFalse: [ self subclassResponsibility ].	
	^ SpartaUnimplementedPathBuilder

---

UPDATE:

I discovered the class when looking at Code Critics and wanted to take note. But minutes later I realized there is a Package tag with many classes with this "pattern"... something to understand.

[tinchodias]

In SkiaThreadedLibrary:

calloutAPIClass
	^ ThreadedFFIMigration threadedFFIAvailable
		ifTrue: [ TFCalloutAPI ]
		ifFalse: [ super calloutAPIClass ]

Where ThreadedFFIMigration doesn't exist

[tinchodias]

This class doesn't have any method, subclass, reference, or class comment:

Object subclass: #Sparta
	instanceVariableNames: ''
	classVariableNames: ''
	package: 'Sparta-Core'

In fact, the list of classes and traits in this situation is large: