I made A Libary called "Joystick" But I Get An Error

I made A Libary called "Joystick" But I Get An Error:
joystick:7:6: error: 'void Joystick::setup()' cannot be overloaded

void setup() {

^~~~~

joystick:7:6: error: with 'void Joystick::setup()'

void setup() {

^~~~~

joystick:23:6: error: 'void Joystick::loop()' cannot be overloaded

void loop() {

^~~~

joystick:23:6: error: with 'void Joystick::loop()'

void loop() {

^~~~

joystick:34:1: error: expected '}' at end of input

}

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