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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 prepare_time_millis(data, schema):
 """Convert datetime.time to int timestamp with milliseconds"""

    if isinstance(data, datetime.time):
        return int(
            data.hour * MLS_PER_HOUR + data.minute * MLS_PER_MINUTE
            + data.second * MLS_PER_SECOND + int(data.microsecond / 1000))
    else:
        return data