metric: International System (SI), used in most of the world (Europe, Asia, Africa,
South America, Australia). It uses meters (m) and kilometers (km), decimal-based with no fractions.imperial_us: United States customary units, used in the United States. It uses feet (ft)
for short distances (< 0.125 mi), then miles (mi) to the quarter (¼, ½, ¾) under 3 mi, to the half
under 10 mi and whole from there.imperial_uk: United Kingdom imperial units, used in the United Kingdom. It uses yards (yd)
for short distances (< 0.125 mi), then miles (mi) as imperial_us gives them.
The distance unit systems the SDK formatters support.
It sets the measurement system for formatting distances. Each system uses region-appropriate units and conventions.