code: @Override
      public Enumeration<String> getKeys() {
          final Enumeration<?> enumeration = myProperties.elements();
  
          return new Enumeration<String>() {
  
              /**
               * Returns whether the {@link Enumeration} has more elements.
               *
               * @return True if the {@link Enumeration} has more elements; else, false.
               */
              @Override
              public boolean hasMoreElements() {
                  return enumeration.hasMoreElements();
              }
  
              /**
               * Returns the next element in the {@link Enumeration}
               *
               * @return The next element in the {@link Enumeration}
               */
              @Override
              public String nextElement() {
                  return (String) enumeration.nextElement();
              }
          };
      }
docs: Returns an {@link Enumeration} of property keys.
  
  @return An {@link Enumeration} of property keys.