code: public static void init(Iterable<ObjectMapper> mappers, String filter) throws IllegalStateException {
          init(mappers, new SimpleSquigglyContextProvider(new SquigglyParser(), filter));
      }
docs: Initialize a @{@link SquigglyPropertyFilter} with a static filter expression.
  
  @param mappers the Jackson Object Mappers to init
  @param filter the filter expressions
  @throws IllegalStateException if the filter was unable to be registered