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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def example_add_line_to_file():
 """ Different methods to append a given line to the file, all work the same. """

    my_file = FileAsObj('/tmp/example_file.txt')
    my_file.add('foo')
    my_file.append('bar')
    # Add a new line to my_file that contains the word 'lol' and print True|False if my_file was changed.
    print(my_file + 'lol')
    # Add line even if it already exists in the file.
    my_file.unique = False
    my_file.add('foo')