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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 _make_pretty_examples(examples):
 """ Makes the examples description pretty and returns a formatted string if `examples` starts with the example prefix. Otherwise, returns None. Expected input: Examples: Expected output: **Examples:** ``` ``` """


    if examples.startswith("\n    Examples:"):
        examples = "\n".join(map(lambda u: u[6:], examples.strip().split("\n")[1:]))
        return "**Examples:**\n\n```\n%s\n```\n\n" % examples