random abstract method
Generates a random user name
UsernameGen.random(); // communicative-accountant-31
OR
UsernameGen()
..setSeperator('_')
..generate(); // emotional_lambert_65
Implementation
String random();
Generates a random user name
UsernameGen.random(); // communicative-accountant-31
OR
UsernameGen()
..setSeperator('_')
..generate(); // emotional_lambert_65
String random();