code: @Pure
  	public static <T extends Enum<T>> T getAttributeEnum(Node document, Class<T> type, boolean caseSensitive, String... path) {
  		assert document != null : AssertMessages.notNullParameter(0);
  		return getAttributeEnumWithDefault(document, type, caseSensitive, null, path);
  	}
docs: Read an enumeration value.
  
  @param <T> is the type of the enumeration.
  @param document is the XML document to explore.
  @param type is the type of the enumeration.
  @param caseSensitive indicates of the {@code path}'s components are case sensitive.
  @param path is the list of and ended by the attribute's name.
  @return the value of the enumeration or <code>null</code> if none.