Endpoint for creating polygons within container.
Custom polygons are shapes that are defined by a user. They are not attached to any administrative boundaries. Default polygons are shapes that are defined by the system and are attached to administrative boundaries.
Custom polygons need to be added with the_geom field. This field is stringified geojson of the polygon. For now the type of the geojson object must be MultiPolygon.
Default polygons need to be added with ref_id and feature_id, by geo_type and geo_name or by geo_type and geo_code.
In case there are two geographies with the same name (for example Holm is name of four parishes in Sweden) then the geo_code have to be used instead of the geo_name. Also in that case the API returns error message with possible codes for that name.
For postcodes geo_code and geo_name are the same.