Method: SUBTRACT_WEEK
Method: ADD_DAY
Method: GET_WEEK_BEGIN
Method: GOTO_MONTH_BEGIN
Method: GET_DATE
Method: CONSTRUCTOR
Method: ADD_WEEK
Method: GOTO_TODAY
Method: GOTO_CURRENT_WEEK
Method: ADD_MONTH
Method: GOTO_WEEK_BEGIN
Method: GOTO_CURRENT_MONTH
Method: SUBTRACT_MONTH
Method: SUBTRACT_DAY
Method: CLASS_CONSTRUCTOR
Method: GOTO_CUSTOM_DATE
Method: NORMALIZE
Method: DATE_MINUS
Method: DATE_PLUS
Method: GOTO_CURRENT
Method: IS_CURRENT