[Cuis-dev] [Fix] Duplicated code in #isKindOf:

[Nicolás Papagna Maldonado]

Hi folks,

I noticed that the current implementation of Object>>#isKindOf: is a
duplication of Behavior>>#includesBehavior:

*Object>>#isKindOf: aClass *
  "Answer whether the class, aClass, is a superclass or class of the
receiver."

  self class == aClass
    ifTrue: [^true]
    ifFalse: [^self class inheritsFrom: aClass]

*Behavior>>#includesBehavior: aClass*

  ^self == aClass or:[self inheritsFrom: aClass]

The attached changeset implements #isKindOf: using #includesBehavior: to
remove the duplicated code.

Best,
Nico PM
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