前同事离职了，收老板委托改一个问题，希望大神能赐教一下，
我希望页面打开后ScrollView能横向滚动到指定的坐标，但是我用官方的不论是scrollToOffset，还是scrollToPercentHorizontal，都提示方法不存在，是不要需要先在ScrollView的那个文件下定义一下这个方法呢，还是说这个是系统方法，需要怎么初始化，这是我的代码截图，
this.node是能正常打印的，但下面没有跟两个方法相关的内容
active: (…)
activeInHierarchy: true
anchorX: 0.5
anchorY: 0.5
angle: 0
children: Array(1)
childrenCount: 1
color: e
group: “default”
groupIndex: 0
height: (…)
isValid: (…)
name: (…)
opacity: (…)
rotation: (…)
rotationX: (…)
rotationY: (…)
scale: (…)
scaleX: (…)
scaleY: (…)
skewX: (…)
skewY: (…)
uuid: (…)
width: (…)
x: (…)
y: (…)
zIndex: (…)
__eventTargets: []
_active: true
_activeInHierarchy: true
_anchorPoint: h {x: 0.5, y: 0.5}
_bubblingListeners: a {_callbackTable: {…}}
_capturingListeners: a {_callbackTable: {…}}
_childArrivalOrder: 2
_children: [r]
_color: e {_val: 4294967295}
_components: (3) [r, r, r]
_contentSize: a {width: 1280, height: 720}
_cullingMask: 1
_eulerAngles: c {x: 0, y: 0, z: 0}
_eventMask: 24
_id: “Node.667”
_is3DNode: false
_level: 1
_localMatDirty: 0
_localZOrder: 2
_matrix: t {m00: 1, m01: 0, m02: 0, m03: 0, m04: 0, …}
_mouseListener: a {_onEvent: ƒ, _type: 4, _listenerID: “__cc_mouse”, _registered: true, _fixedPriority: 0, …}
_name: “ScrollView”
_objFlags: 0
_opacity: 255
_parent: r {_name: “Canvas”, _objFlags: 0, _parent: r, _active: true, _level: 1, …}
_persistNode: (…)
_position: c {x: 0, y: 0, z: 0}
_prefab: null
_quat: l {x: 0, y: 0, z: 0, w: 1}
_renderComponent: r {_super: null, _name: “”, _objFlags: 59392, node: r, __scriptAsset: false, …}
_renderFlag: 64
_reorderChildDirty: false
_scale: c {x: 1, y: 1, z: 1}
_skewX: 0
_skewY: 0
_touchListener: o {_onEvent: null, _type: 1, _listenerID: “__cc_touch_one_by_one”, _registered: true, _fixedPriority: 0, …}
_widget: null
_worldMatDirty: false
_worldMatrix: t {m00: 1, m01: 0, m02: 0, m03: 0, m04: 0, …}
_zIndex: undefined
eulerAngles: (…)
is3DNode: (…)
parent: (…)
position: c
x: 0
y: 0
z: 0
proto: r
quat: (…)
scaleZ: (…)
z: (…)
proto: r
