Swift Mapping for Identifiers
A Slice identifier maps to an identical Swift identifier. For example, the Slice identifier Clock becomes the Swift identifier Clock. If a Slice identifier is a Swift keyword, the Slice compiler escapes the generated Swift identifier with backticks (`). For example, the Slice structure while is mapped to a Swift structure or class named `while`.
A single Slice identifier often results in several Swift identifiers. For example, for a Slice interface named Foo, the generated Swift code uses the identifiers Foo and FooPrx (among others). If the interface's name is a Swift keyword such as protocol, the generated identifiers are `protocol` and protocolPrx.