raywenderlich/objective-c-style-guide — pull request #49 by burhanuddin353 (2014-03-09 06:49:51+00:00)
Title: Additions

Naming methods in categories to avoid clashes with method names in the same class or method names in a different category in the same class or superclass.

Source: https://developer.apple.com/library/ios/documentation/cocoa/conceptual/ProgrammingWithObjectiveC/CustomizingExistingClasses/CustomizingExistingClasses.html