fun doSomething() {
  ...
  doComplexTask("Akexorcist", { name ->
    "Mr.${name.trim()}"
  }, { fullName ->
    System.out.println("Hello, $fullName")
  })
}
fun doComplexTask(name: String,
                method1: (name: String) -> String,
                method2: (fullName: String) -> Unit) {
  doSomething1(name)
  method1(name)
  doSomething2(name)
  method2(name)
  doSomething3(name)
}