code: public static PropertyLookup create(final File propfile, final Map defaults, final IPropertyLookup defaultsLookup) {
          return new PropertyLookup(propfile, defaults, defaultsLookup);
      }
docs: Calls base constructor feeding defaults from Map and IPropertyLookup params
  
  @param propfile       File containing property data
  @param defaults       Map of default properties
  @param defaultsLookup IPropertyLookup of default properties
  @return lookup