MPILocation represents a specific area of interest such as a store location
Note: A MPILocation's MPINodes and MPIPolygons can be on multiple MPIMaps, or in multiple non-adjacent places on the same MPIMap. For example, all washrooms at a given venue could belong to one MPILocation. A washroom location might a have a few MPIPolygons spread throughout the venue for each one that exists. On the other hand, a department store could live on multiple floors. A single store can just have one presence, and therefore one MPIPolygon . Some Locations just have a single point with MPINodes.