code: def hal(root, 
              apiname=None, 
              default_curie=None,
              auth=None, 
              headers=None, 
              session=None,
              ):
          '''Create a HALNavigator'''
          root = utils.fix_scheme(root)
          halnav = HALNavigator(
              link=Link(uri=root),
              core=APICore(
                  root=root,
                  nav_class=HALNavigator,
                  apiname=apiname,
                  default_curie=default_curie,
                  session=session,
              )
          )
          if auth:
              halnav.authenticate(auth)
          halnav.headers.update(DEFAULT_HEADERS)
          if headers is not None:
              halnav.headers.update(headers)
          return halnaf hal(root, 
              apiname=None, 
              default_curie=None,
              auth=None, 
              headers=None, 
              session=None,
              ):
          '''Create a HALNavigator'''
          root = utils.fix_scheme(root)
          halnav = HALNavigator(
              link=Link(uri=root),
              core=APICore(
                  root=root,
                  nav_class=HALNavigator,
                  apiname=apiname,
                  default_curie=default_curie,
                  session=session,
              )
          )
          if auth:
              halnav.authenticate(auth)
          halnav.headers.update(DEFAULT_HEADERS)
          if headers is not None:
              halnav.headers.update(headers)
          return halnav
docs: Create a HALNavigator