minor refactor of NestingRule
minor refactor of NestingRule

Johnykutty/SwiftLint,realm/SwiftLint,cdillard/SwiftLint,realm/SwiftLint,daniel-beard/SwiftLint,jeffreybergier/SwiftLint,cdillard/SwiftLint,realm/SwiftLint,lyft/SwiftLint,lyft/SwiftLint,jeffreybergier/SwiftLint,lyft/SwiftLint,Johnykutty/SwiftLint,wfleming/SwiftLint,firebase/SwiftLint,firebase/SwiftLint,dictav/SwiftLint,realm/SwiftLint,victorpimentel/SwiftLint,Johnykutty/SwiftLint,firebase/SwiftLint,lyft/SwiftLint,victorpimentel/SwiftLint,firebase/SwiftLint,victorpimentel/SwiftLint,Johnykutty/SwiftLint,jeffreybergier/SwiftLint,daniel-beard/SwiftLint,jeffreybergier/SwiftLint,wfleming/SwiftLint,dictav/SwiftLint,victorpimentel/SwiftLint