protocol SampleProtocol {}

class SampleClass:SampleProtocol {}

extension SampleProtocol {
    func extMethod() {
        print("I am here in Protocol")
    }
}
extension SampleClass {
    func extMethod() {
        print("I am here in Class")
    }
}

let obj = SampleClass()
let prt : SampleProtocol = SampleClass()
obj.extMethod()
prt.extMethod()