code: public static Preset get(String marketplace) throws MnoConfigurationException {
  		Preset maestrano = configurations.get(marketplace);
  		if (maestrano == null) {
  			throw new MnoConfigurationException("Maestrano was not configured for marketplace: " + marketplace + ". Maestrano.configure(" + marketplace + ") needs to have been called once.");
  		}
  		return maestrano;
  	}
docs: return the Maestrano Instance for the given preset
  
  @param marketplace
  @return
  @throws MnoConfigurationException
  if no instance was not configured