How can I add items to a listbox in the properties window?

__eq__(self, other):  Method that returns True if self and other are considered the same Flight: if the origin and destination are the same for both Flights. Make sure that if “other” variable is not a Flight object, this means False should be returned.    getFlightNumber(self):  Getter that returns the Flight number   getStart(self): Getter that returns the Plane Start    getgoingTo(self):  Getter that returns the Plane destination    isDomesticFlight(self):  Method that returns True if the flight is domestic, EX within a country (the Start and goingTo are in the same country); returns False if the flight is international (the Start and goingTo are in different countries)    setStart(self, origin): Setter that sets (updates) the Plane Start    setgoingTo(self, destination): Setter that sets (updates) the Plane GoingTo

5. public static String getFlag(int size, char color1, char color2, char color3) - This method returns a string where a triangle appears on the left size of the diagram, followed by horizontal lines. For example, calling DrawingApp.getFlag(9, 'R', '.', 'Y'); will generate the string: R... RRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYYYYYY RRRYYYYΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥ YYYYYYYYY RRRRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYYYYYY RRRRRYYYYY YYYYYYYYYYYYY YYYYYYYYY RRRRRRY YYYYYYYYYYYYYYYYY YYYYYYYYY RRRRRRRYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYYYYYY RRRRRRRRYY YYYYYYYYYYYYYYYY YYYYYYYYY RRRRRRRRR. RRRRRRRRR. RRRRRRRRYYYYYY rҮҮҮҮҮҮҮҮҮҮҮҮҮҮҮҮҮҮ YYYYYYYYY RRRRRRRYYY ΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥ ΥΥΥΥΥΥΥΥΥ RRRRRRYYY ΥΥΥΥΥΥΥΥΥΥΥΥΥΥΥ YYYYYYYYY RRRRRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYYYYYY RRRRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYYYYYY RRRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY YYYYYYYYY RRYYYYYYYY YYYYYYYYYYYYYYYY ΥΥΥΥΥΥΥ The diagram has a number of rows that corresponds to size * 2 and a number of colums that…

How are TextBox and Masked TextBox distinct from one another? instructions for changing case in a text field.