code: public static YggdrasilAuthenticator password(String username, String password, CharacterSelector characterSelector, String clientToken) throws AuthenticationException {
  		return password(username, password, characterSelector, clientToken, YggdrasilAuthenticationServiceBuilder.buildDefault());
  	}
docs: Creates a <code>YggdrasilAuthenticator</code> with the given client
  token, and initializes it with password.
  
  @param username the username
  @param password the password
  @param characterSelector the character selector
  @param clientToken the client token
  @return a YggdrasilAuthenticator
  @throws AuthenticationException If an exception occurs during the
  authentication