code: @Override
  	public Set<Class<?>> resolveByInterface(final Class<?> interfaceClass)
  			throws IOException {
  		Matcher<Class<?>> matcher = new Matcher<Class<?>>() {
  			
  			public boolean matches(Class<?> clazz) {
  				Class<?>[] interfaces = clazz.getInterfaces();
  				
  				for (Class<?> c : interfaces) {
  					if (c.equals(interfaceClass)) {
  						return true;
  					}
  				}
  				
  				if (clazz.getSuperclass() != null) {
  					return matches(clazz.getSuperclass());
  				} else {
  					return false;
  				}
  			}
  			
  		};
  		return resolve(matcher);
  	}
docs: Resolves the classes that implements the specified interface as
  {@code java.lang.Class}.
  
  @param interfaceClass The interface being implemented.
  @return Classes that implements the specified interface as
  {@code java.lang.Class}.
  @throws IOException If any I/O access fails while traversing the search
  path.