How to fix this code

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1 
extends Node3D


# Called when the node enters the scene tree for the first time.
func _ready():
	pass # Replace with function body.


# Called every frame. 'delta' is the elapsed time since the previous frame.
@warning_ignore("unused_parameter")
func _process(delta):
	
	if Input.action_just_pressed("pause the game"):
		menu_return()

func menu_return():
	get_tree().change_scene_to_file("res://menu_garf.tscn")

errors:

Line 13:Static function “action_just_pressed()” not found in base “Input”.

2

Function name is is_action_just_pressed.