@startuml
class EventSub {
 + {static} NewEventSub(bind.BoundContract, EventFactory, uint64) *EventSub, error
 + Read(ctx context.Context, sink chan<- *Event) error
 + Close()
}
class EventType {
 + Name string
 + Data interface{}
 + Query [][]interface{}
}
class Event {
 + EventType
 + Log types.Log
}
@enduml