SplineSeries removeMultiple() malfunctioning and incorrectly documented

import QtQuick
import QtGraphs

Window {
  width: 640
  height: 480
  visible: true
  title: qsTr("Graphs 2D - removeMultiple bug")

  GraphsView {
    id: graphsView

    anchors.fill: parent

    axisX: ValueAxis {}
    axisY: ValueAxis {}

    SplineSeries {
      id: series1
      XYPoint { x: 0.0; y: 9.0 }
      XYPoint { x: 1.0; y: 3.0 }
      XYPoint { x: 2.0; y: 7.0 }
      XYPoint { x: 3.0; y: 1.0 }
      XYPoint { x: 4.0; y: 8.5 }
      XYPoint { x: 5.0; y: 2.4 }
      XYPoint { x: 6.0; y: 6.0 }
      XYPoint { x: 7.0; y: 1.6 }
      XYPoint { x: 8.0; y: 9.5 }
      XYPoint { x: 9.0; y: 3.9 }
      XYPoint { x: 10.0; y: 9.9 }
    }
  }

  Timer {
    interval: 1000
    running: true
    repeat: true
    onTriggered: {
      series1.removeMultiple(0, 1) // "removePoints" in the docs
    }
  }
}