@startuml
AbstractClass <|- ConcreteClass

interface AbstractClass {
  +TemplateMethod()
  {abstract} +PrimitiveOperation1()
  {abstract} +PrimitiveOperation2()
}
class ConcreteClass {
  +PrimitiveOperation1()
  +PrimitiveOperation2()
}

note left of AbstractClass
  AbstractClass::TemplateMethod() {
    ...
    PrimitiveOperation1();
    ...
    PrimitiveOperation2();
    ...
  }
end note

hide empty attributes
hide empty methods
@enduml