Macau’s experience of national security laws since 2009 can shed light on how the legislation that Beijing is devising for Hong Kong will be enforced there, observers say while warning against simply copying its model.With the central government requiring a new organisation to oversee the proposed national security law in Hong Kong, observers believe the city can learn from its neighbour’s establishment of a commission chaired by its leader.But some of Macau’s reforms from 11 years ago – such…