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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 RoundToSeconds(cls, timestamp):
 """Takes a timestamp value and rounds it to a second precision."""

    leftovers = timestamp % definitions.MICROSECONDS_PER_SECOND
    scrubbed = timestamp - leftovers
    rounded = round(float(leftovers) / definitions.MICROSECONDS_PER_SECOND)

    return int(scrubbed + rounded * definitions.MICROSECONDS_PER_SECOND)