I can't solve this issue by myself. I have a Class

```
class WebViewScreen extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      url: 'https://example.org',
    };
  }

  someMethod = () => {
    return 'something';
  }

  render() {
    return (
      <View style={styles.mainContainer}>
        <WebView
          source={{uri: this.state.url}}
        />
        <StatusBar backgroundColor="white" barStyle="dark-content" />
      </View>
    );
  }
  static navigationOptions = ({navigation}) => {
    return {
      headerTitle: () => (
        <AddressBar navigation={navigation} />
      ),
    };
  };
}

```

I want to access `someMethod` from `static navigationOptions`

---

### I've tried the following without the success:

run `this.someMethod()`

run `WebViewScreen.someMethod()`

`let _this` outside a class, then `_this = this` from a WebViewScreen Class constructor
then `_this.someMethod()` from `static navigationOptions`

---

My question is, how can I achieve this?