The required map policy dictates the type of map to create when it does not exist. The map policy also specifies the mode used when writing items to the map. See policy MapPolicy and write mode MapWriteMode.
[ObsoleteAttribute("Decrement is deprecated. Use Increment with a negative value instead.")]
public static Operation Decrement(
MapPolicy policy,
string binName,
Value key,
Value decr,
params CTX[] ctx
)