lazy reading for radial info for the line estimates.
The radial information is currently only read when one makes a call to getLineEstimate.
However, if one used selectLineEstimates, for example, the radial info is not read. That can be a problem if one wants to directly access that (the rInfo will be None).
workaround
As a workaround, one can still make the additional call to getLineEstimate for each line.
better solution
Use a @property for the rInfo field, just like it is already done for other stuff. I think it should not have negative side effects. Then it is secured that rInfo will be filled if it is accessed and not read already.