How to use the @expo/vector-icons.Ionicons function in @expo/vector-icons

_loadResourcesAsync = async () => {
    // TODO: Decide if we need to remove
    // the linking listener somewhere
    console.info("Adding deep linking listener");
    this._addLinkingListener();
    await this._getInitialUrl();
    return Promise.all([
      Asset.loadAsync([
        require("./assets/images/robot-dev.png"),
        require("./assets/images/robot-prod.png")
      ]),
      Font.loadAsync({
        // This is the font that we are using for our tab bar
        ...Icon.Ionicons.font,
        // We include SpaceMono because we use it in HomeScreen.js. Feel free
        // to remove this if you are not using it in your app
        "space-mono": require("./assets/fonts/SpaceMono-Regular.ttf")
      })
    ]);
  };
  _handleLoadingError = error => {

public loadResourcesAsync = async () => {
    return Promise.all([
      Asset.loadAsync([RobotDev, RobotProd]),
      Font.loadAsync({
        // This is the font that we are using for our tab bar
        ...Icon.Ionicons.font
        // We include SpaceMono because we use it in HomeScreen.js. Feel free
        // to remove this if you are not using it in your app
      })
    ]);
  };

_loadResourcesAsync = async () => {
    this.apolloClient = await setupApolloClient();

    return Promise.all([
      Asset.loadAsync([
        require('./assets/images/buymeacoffee-logo.png'),
        require('./assets/images/youtube-logo.png'),
        require('./assets/images/brain.png')
      ]),
      Font.loadAsync({
        // This is the font that we are using for our tab bar
        ...Icon.Ionicons.font,
        // We include SpaceMono because we use it in HomeScreen.js. Feel free
        // to remove this if you are not using it in your app
        'space-mono': require('./assets/fonts/SpaceMono-Regular.ttf'),
        Menlo: require('./assets/fonts/Menlo-Regular.ttf')
      })
    ]);
  };

_loadResourcesAsync = async () =>
    Promise.all([
      Font.loadAsync({
        // This is the font that we are using for our tab bar
        ...Icon.Ionicons.font,
        // Feel free to remove this if you are not using it in your app
        'open-sans-bold': require('./assets/fonts/OpenSans-Bold.ttf'),
        'open-sans-regular': require('./assets/fonts/OpenSans-Regular.ttf'),
      }),
    ]);

_loadResourcesAsync = async () => {
    return Promise.all([
      Asset.loadAsync([
        require('./assets/images/robot-dev.png'),
        require('./assets/images/robot-prod.png')
      ]),
      Font.loadAsync({
        // This is the font that we are using for our tab bar
        ...Icon.Ionicons.font,
        // We include SpaceMono because we use it in HomeScreen.js. Feel free
        // to remove this if you are not using it in your app
        'space-mono': require('./assets/fonts/SpaceMono-Regular.ttf'),
        'montserrat-bold': require('./assets/fonts/Montserrat-Bold.ttf'),
        'montserrat-italic': require('./assets/fonts/Montserrat-Italic.ttf'),
        'montserrat-regular': require('./assets/fonts/Montserrat-Regular.ttf')
      })
    ]);
  };

_loadResourcesAsync = async () => {
    return Promise.all([
      Asset.loadAsync([
        require('./assets/images/bugsnag.png'),
      ]),
      Font.loadAsync({
        // This is the font that we are using for our tab bar
        ...Icon.Ionicons.font,
        // We include SpaceMono because we use it in HomeScreen.js. Feel free
        // to remove this if you are not using it in your app
        'space-mono': require('./assets/fonts/SpaceMono-Regular.ttf'),
      }),
    ]);
  };

loadLocalAsync = async () => {
    return await Promise.all([
      Asset.loadAsync([
        require('../assets/flame.png'),
        require('../assets/icon.png')
      ]),
      Font.loadAsync({
        ...Icon.Ionicons.font
      })
    ])
  }