Analysis of SR-2750 https://bugs.swift.org/browse/SR-2750

SR-2750.swift

// inspection whether repdocuces or not, SR-2750
// devxoul/Then a.k.a. `.then`
// banjun/ikemen a.k.a. `※`

  func testWithTypeAnnotation() {
    let user = User().then {
      $0. // success completion
    }
  }

  func testWithTypeAnnotation() {
    let user: User = User().then {
      $0. // fail completion
    }
  }

  func testWithTypeAnnotationIkemen() {
    let user = User() ※ {
      $0. // success completion
    }
  }

  func testWithTypeAnnotationIkemen() {
    let user: User = User() ※ {
      $0. // success completion
    }
  }