Get the property features for available geographies
availableGeodataFeatures(x = getAPIRoot(), geodatum_fields = c("name",
"description", "location"))
an API root address (default: the R-session default)
character, what pieces of information about each geodatum should be retained? (default: `c("name", "description", "location")``)
a dataframe with all of the available features and geographies for matching