mermaid.md

classDiagram
class baseContract
class instance1
class instance2
class instance3
class API
baseContract <|.. base
base <|-- instance1
base <|-- instance2
base <|-- instance3
instance1 o-- API
instance2 o-- API
instance3 o-- API
baseContract: number id
class instance1 {
    +getSpeed()
}
instance2: +getElevation()
instance3: +getTemperature()

stateDiagram
[*] --> click
note right of click
user clicks mouse 
or touches screen
end note
click --> trigger:handler
trigger --> geocode1:start
trigger --> geocode2:start
trigger --> geocode3:start
geocode1 --> aggregator:wait
geocode2 --> aggregator:wait
geocode3 --> aggregator:wait
aggregator --> [*]:all