The SoftwareSerial implementation for Arduino UNO R4 is missing the end() method.
Sometimes it is necessary to stop the Serial and start manually controlling the pins.

end() is implemented for all other platforms that I have worked with 😦. For example:

• https://github.com/arduino/ArduinoCore-avr/blob/1.8.6/libraries/SoftwareSerial/src/SoftwareSerial.h#L96
• https://github.com/arduino/ArduinoCore-megaavr/blob/1.8.8/libraries/SoftwareSerial/src/SoftwareSerial.h#L96

Additional context

Additional requests

• Arduino UNO R4 SoftwareSerial missing end() #463 (comment)
• Arduino UNO R4 SoftwareSerial missing end() #463 (comment)