content: import React from 'react';
  import Navbar from 'react-bootstrap/lib/Navbar';
  import Nav from 'react-bootstrap/lib/Nav';
  import NavItem from 'react-bootstrap/lib/NavItem';
  import { LinkContainer, IndexLinkContainer } from 'react-router-bootstrap';
  
  export const Toolbar = () => {
    return (
      <Navbar>
        <Nav>
          <Navbar.Brand>
            <a href='#'>InferenceLensGM</a>
          </Navbar.Brand>
          <IndexLinkContainer to='/'>
            <NavItem>Home</NavItem>
          </IndexLinkContainer>
          <LinkContainer to='/catalog'>
            <NavItem>Catalog</NavItem>
          </LinkContainer>
          <LinkContainer to='/about'>
            <NavItem>About</NavItem>
          </LinkContainer>
        </Nav>
      </Navbar>
    );
  };
  
  //  <LinkContainer to='/counter'>
  //    <NavItem>Counter</NavItem>
  //  </LinkContainer>
  
  export default Toolbar;
  