old_contents: import React from 'react';
  import { View, Button } from 'react-native';
  
  /*
  Developer screen.
  Provides access to components during development.
  */
  export default class DeveloperScreen extends React.Component {
    static navigationOptions = {
      tabBar: {
        label: 'Developer',
      },
      title: 'Developer',
    };
  
    render() {
      const { navigate } = this.props.navigation;
      return (
        <View>
          <Button onPress={() => navigate('SampleScreen')} title="Go to the sample screen" />
        </View>
      );
    }
  }
  
new_contents: import React from 'react';
  import { View, Button } from 'react-native';
  
  /*
  Developer screen.
  Provides access to components during development.
  */
  export default class DeveloperScreen extends React.Component {
    static navigationOptions = {
      tabBar: {
        label: 'Developer',
      },
      title: 'Developer',
    };
  
    render() {
      const { navigate } = this.props.navigation;
      return (
        <View>
          <Button onPress={() => navigate('SampleScreen')} title="Go to the sample screen" />
          <Button onPress={() => navigate('CreateJobScreen')} title="Go to create job screen" />
        </View>
      );
    }
  }
  
subject: Add navigation to create job screen from developer screen