function one (this : number) {}
function two (this : number, a) {}
function three (this : number, ...a) {}
function four (this : number, a, b, ...c) {}
function five<T> (this : T) {}

type six = (this : number) => void
type seven = (this : number, a : number) => void
type eight = (this : number, ...a : any) => void
type nine = <T>(this : T) => void

type ten = {
    m1(this : string) : void,
    m2(this : string, a : number) : void,
    m3(this : string, ...a : any) : void,
    m4<T>(this : T) : void
}

declare function eleven (this : number) : void
declare function twelve (this : string, a : number) : void
declare function thirteen (this : string, ...a : any) : void
declare function fourteen<T>(this : T) : void

declare class Fifteen {
    m1(this : string) : void,
    m2(this : string, a : number) : void,
    m3(this : string, ...a : any) : void,
    m4<T>(this : T) : void
}

class Sixteen {
    m1 (this : number) {}
    m2 (this : number, a) {}
    m3 (this : number, ...a) {}
    m4 (this : number, a, b, ...c) {}
    m5<T> (this : T) {}
}

let seventeen = {
    m1 (this : number) {},
    m2 (this : number, a) {},
    m3 (this : number, ...a) {},
    m4 (this : number, a, b, ...c) {},
    m5<T> (this : T) {}
}