MeasurementPair.is_colocated() is specific to a certain data source

[Rijgersberg]

telcell/telcell/data/models.py

Line 73 in 3a16561

def is_colocated(self):

I have dificulty undertanding this method on MeasurementPair. A MeasurementPair sounds like something quite generic, but its is_colocated()-method is weirdly specific.

1. It references some CSV in the comment (what CSV? MeasurementPairs could come from any number of sources),
2. It relies on information in its measurement's extra, which sounds like it should be optional and cannot be relied upon in such a general method.

What's even weirder is that there is a more general is_colocated()-function in the same file, only slightly lower.