main-when-available - Returns the position of the entry point typed 'main'. A place with none uses its
first untyped entry point, as reverse geocoding returns them. A place whose entry points are all 'minor', or
that has none, returns its own position. Use it for routing, to direct vehicles to the correct entrance.ignore - Always returns the default position of the place, typically the center point.
How to handle entry points when extracting a position from a place.
Entry points are specific access locations of a place, such as building entrances or parking lot entries.