@startuml
'figure 1: Queue'
skinparam monochrome true
skinparam handwritten false
skinparam shadowing false
hide class circle


object add_new
object next

map Queue {
3 => fourth_path
2 => third_path
1 => second_path
0 => first_path
}

Queue::0 --> next

add_new --> Queue::3


@enduml
