docs: def actually_mount(self, vault_client, resource, active_mounts):
          """Handle the actual (potential) mounting of a secret backend.
          This is called in multiple contexts, but the action will always
          be the same. If we were not aware of the mountpoint at the start
          and it has not already been mounted, then mount it."""
          a_mounts = list(active_mounts)
          if isinstance(resource, Secret) and resource.mount == 'cubbyhole':
              return a_mounts
  
          active_mount = find_backend(resource.mount, active_mounts)
          if not active_mount:
              actual_mount = find_backend(resource.mount, self._mounts)
              a_mounts.append(actual_mount)
              actual_mount.sync(vault_client)
  
          return a_mounts