Adds writeIfChanged convenience method
Adds writeIfChanged convenience method

AliSoftware/SwiftGen,Dimentar/SwiftGen,SwiftGen/SwiftGen,SwiftGen/SwiftGen,plivesey/SwiftGen,AliSoftware/SwiftGen,AliSoftware/SwiftGen,plivesey/SwiftGen,plivesey/SwiftGen,Dimentar/SwiftGen