code: func NewMockStatefulPeer(name, url string, opts ...MockPeerOpt) *MockPeer {
  	p := &MockPeer{
  		MockPeer: fabmocks.NewMockPeer(name, url),
  	}
  	for _, opt := range opts {
  		opt(p)
  	}
  	return p
  }
docs: // NewMockStatefulPeer returns a new MockPeer with the given options