contains
Does this loosely contain the other range?
As strictlyContains, but also allow ranges which have an equal start and/or end position. In these cases, the `other` range is not strictly "inside" of this range.
Does this loosely contain the other range?
As strictlyContains, but a position that is on the "edge" of this range will also pass.
For example, if the given position is equal to the start or end position of this range. In these cases, the `other` range is not strictly "inside" of this range.