def run_experiment(self):
try:<EOL><INDENT>self.sign_up()<EOL>self.participate()<EOL>if self.sign_off():<EOL><INDENT>self.complete_experiment("<STR_LIT>")<EOL><DEDENT>else:<EOL><INDENT>self.complete_experiment("<STR_LIT>")<EOL><DEDENT><DEDENT>finally:<EOL><INDENT>self.driver.quit()<EOL><DEDENT>
Sign up, run the ``participate`` method, then sign off and close
        the driver.