class StringType {}
class URLType {}

class Special<Type> {

}

extension Special where Type : StringType {

	static var path: String {

		return "A"
	}
}

extension Special where Type : URLType {

	static var path: URL {

		return URL(fileURLWithPath: "A")
	}
}

let p1: String = Special.path	// "A"
let p2: URL = Special.path		// A -- file:///private/var/folders/_7/n6n7cym527s7frqb6036mbpc0000gq/T/com.apple.dt.Xcode.pg/containers/com.apple.dt.playground.stub.iOS_Simulator.ezura-var-FCB0244E-CA4F-4AA2-A312-798BB8FFA2D4/