title: Find an object in a library (here, it is the NavigationLayout of the Kivy library)
body: <p>I am learning <em>Kivy</em> and I'm not used to <code>.kv</code>, so I am trying to learn the &quot;hard way&quot; first.</p>
  <p>Problem: there is not a lot of documentation for interaction with <em>Kivy</em> except <code>.kv</code>.</p>
  <p>I'm stuck with the import of the NavigationLayout, I tried to find it on the official <a href="https://github.com/kivy/kivy/tree/master/kivy" rel="nofollow noreferrer">Github</a>, but I failed !</p>
  <pre><code>from kivy.uix.boxlayout import BoxLayout
  from kivymd.uix.toolbar import MDToolbar
  from kivy.properties import ObjectProperty
  from kivy.uix.screenmanager import ScreenManager, Screen
  from kivymd.app import MDApp
  #from kivy import road.to.navigationlayout import NavigationLayout
  
  
  class App(MDApp):
      def build(self):
          screen_manager = ScreenManager()
          main_screen = Screen()
          main_box = BoxLayout()
          main_toolbar = MDToolbar()
          main_toolbar.title = &quot;Hello there !&quot;
          #navigation_layout = NavigationLayout()
  
          screen_manager.add_widget(main_screen)
          main_screen.add_widget(main_box)
          main_box.add_widget(main_toolbar)
          return screen_manager
  
  
  App().run()
  </code></pre>
  <p>PS: If you have tips to find out where objects are situated in new libraries, I would be happy to heard them!</p>