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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 _byte_buffer_md5(buffer_):
 """ Computes the md5 digest of a byte buffer in base64 encoding. """

    md5 = hashlib.md5(buffer_)
    byte_digest = md5.digest()
    return base64.b64encode(byte_digest).decode()