Last step of refactoring before adding support for > 1000 entities.
Make helper functions. One extracts list parameters.
One creates links more simply. This is cleaning up the large
function body so I can move stuff around more radically.
Patch by: Dan Bentley
# Until model subclassing is a possibility, a mixin class is used to add
# the necessary functions that may be contributed for geographic objects.
class GeoMixin:
"""
The Geographic Mixin class provides routines for geographic objects,
however, it is no longer necessary, since all of its previous functions
may now be accessed via the GeometryProxy. This mixin is only provided
for backwards-compatibility purposes, and will be eventually removed
(unless the need arises again).
"""
pass