set)</code> retrieves an index of all
available vectors for a given dataset from the CensusMapper API or local
cache if recently called. Each Census variable has a vector code
assigned to it with naming pattern that goes
<code>v_{dataset}_{index}</code>. This is the code by which vectors are
identified through the CensusMapper API. In addition the vector code,
there is additional information showing population type, aggregation
type, label and details, as well as variable hierarchy. This function
can also b