docs: def sync_imports( self, quiet = False ):
          """Return a context manager to control imports onto all the engines
          in the underlying cluster. This method is used within a ``with`` statement.
  
          Any imports should be done with no experiments running, otherwise the
          method will block until the cluster is quiet. Generally imports will be one
          of the first things done when connecting to a cluster. (But be careful
          not to accidentally try to re-import if re-connecting to a running
          cluster.)
  
          :param quiet: if True, suppresses messages (defaults to False)
          :returns: a context manager"""
          self.open()
          return self._client[:].sync_imports(quiet = quiet)