This is the original code from the Toponaming branch, modified slightly to update the
method name and correct some grammatical errors in the descriptive comment.
Co-authored-by: Chris Hennes <chennes@pioneerlibrarysystem.org>
Minor modifications to make it compile with previous refactorings.
The only substantial change to the original is moving the
getElementHistory function from ComplexGeoData to MappedName so
that the dehash function can remain private.
