Unused variable: `spawn_function`

[TheYellowArchitect]

The below is in the class DropItemSpawner

class_name DropItemSpawner
extends MultiplayerSpawner

## Class that customizes the way the spawner generates objects on the network, 
## placing information on the [PackedScene] of the dropped item, position and rotation.

func _init():
    spawn_function = _spawn_custom

func _spawn_custom(data : Array):
    if data.size() != 4 and data.size() != 3:
        print("data size error!")
        return null
    if typeof(data[0]) != TYPE_VECTOR3 or typeof(data[1]) != TYPE_VECTOR3 or typeof(data[2]) != TYPE_STRING:
        print("data incompatible!")
        return null
    var obj = load(data[2]).instantiate()
    PackedScene
    obj.position = data[0]
    obj.rotation = data[1]
    var item = Item.new()
    item.definition = obj.item.definition
    if data.size() == 4 and typeof(data[3]) == TYPE_DICTIONARY:
        item.properties = data[3]
    obj.item = item
    return obj

The spawn function Callable variant above is unused, so that _init() function is needless too. That said, where is the below function used?

[TheYellowArchitect]

nvm, I just realized its an override of MultiplayerSpawner's spawn_function