How to use the react-map-gl.autobind function in react-map-gl

constructor(props) {
    super(props);
    this.state = {
      viewport: {
        longitude: -122.40677,
        latitude: 37.78949,
        zoom: 12.76901,
        startDragLngLat: null,
        isDragging: false
      },
      points: Immutable.fromJS(initialPoints)
    };
    autobind(this);
  }

constructor(props) {
    super(props);
    this.state = {
      viewport: {
        latitude: location.latitude,
        longitude: location.longitude,
        zoom: 11,
        bearing: 180,
        pitch: 60,
        startDragLngLat: null,
        isDragging: false
      },
      mapStyle: buildStyle({stroke: '#FF00FF', fill: 'green'})
    };
    autobind(this);
  }

constructor(props) {
    super(props);
    this.state = {
      viewport: {
        latitude: location.latitude,
        longitude: location.longitude,
        zoom: 11,
        startDragLngLat: null,
        isDragging: false
      }
    };
    autobind(this);
  }