* The original implementation was made with the idea in mind that bars
have a time range that they encompass. When the `Time` property is
rounded down, the period added to `EndTime` ensures that the data
will not have look-ahead bias.
However, multiple data sources do not have a time range that the data
applies to, and is actually point-in-time. For these kinds of
data, rounding of the data is not preferred since they are supposed
to represent a point in time.
Gerardo Salazar
a20ac26eb7