code: public static FilterBinder forClass(
              Binder binder,
              Class<? extends Filter> filterClass) {
  
          Preconditions.checkNotNull(binder, "Binder cannot be null.");
          Preconditions.checkNotNull(filterClass, "Filter Class cannot be null.");
  
          return new FilterBinder(
                  binder,
                  filterClass,
                  binder.getProvider(filterClass));
      }
docs: Builds a Filter Binder using a Filter Class rather than an instance. It will use the {@link com.google.inject.Binder}
  to create a {@link com.google.inject.Provider} used in the Filter Binder.
  
  @param binder      The Binder for the current Guice module.
  @param filterClass The Class of a Filter to be bound.
  @return A working FilterBinder.