@startuml
hide empty members

skinparam {
  Style StrictUML
  ClassAttributeIconSize 0
  ClassStereotypeFont {
    Size 12
    Style plain
  }
  DefaultFontName Roboto Condensed
  Defaultfontsize 14
  Classfontsize 16
  Roundcorner 8
  Padding 2
  RankSep 100
  NodeSep 120
}

class Calculator {
--
  + add(x : Integer, y : Integer) : Integer
  + multiply(x : Integer, y : Integer) : Integer
}

@enduml