code: def construct(self, **bindings):
      
      context = _assign_values_to_unbound_vars(self._unbound_vars, bindings)
      context.update(self._partial_context)
      return self._construct(context)
docs: Constructs the graph and returns either a tensor or a sequence.
  
      Args:
        **bindings: Arguments for every deferred parameter.
      Returns:
        The value that is placed into this.