text: import { Platform } from 'react-native'
  import { StackNavigator } from 'react-navigation'
  import Examples from './examples'
  import MapTypes from './examples/map-types'
  import Layers from './examples/layers'
  import Indoor from './examples/indoor'
  import Animated from './examples/animated'
  import Controls from './examples/controls'
  import Gestures from './examples/gestures'
  import Marker from './examples/marker'
  import Polyline from './examples/polyline'
  import Polygon from './examples/polygon'
  import Circle from './examples/circle'
  import Events from './examples/events'
  import Offline from './examples/offline'
  import HeatMap from './examples/heat-map'
  import MultiPoint from './examples/multi-point'
  import PolygonSearch from './examples/poi/polygonSearch'
  
  export default StackNavigator({
    Examples: { screen: Examples },
    MapTypes: { screen: MapTypes },
    Layers: { screen: Layers },
    Indoor: { screen: Indoor },
    Animated: { screen: Animated },
    Controls: { screen: Controls },
    Gestures: { screen: Gestures },
    Marker: { screen: Marker },
    Polyline: { screen: Polyline },
    Polygon: { screen: Polygon },
    Circle: { screen: Circle },
    Events: { screen: Events },
    Offline: { screen: Offline },
    HeatMap: { screen: HeatMap },
    MultiPoint: { screen: MultiPoint },
    PolygonSearch: { screen: PolygonSearch }
  }, {
    navigationOptions: {
      headerTintColor: '#212121',
      headerStyle: {
        ...Platform.select({
          ios: {
            backgroundColor: '#fff',
          },
          android: {
            backgroundColor: '#f5f5f5',
          },
        }),
      },
    },
  })
  