backing property Null safety
read / write
The persistent values of this object.
Values stored by this object are stored in backing. A backing is a Map, where each key is a property name of this object. A backing adds some access logic to storing and retrieving its key-value pairs.
You rarely need to use backing directly. There are many implementations of ManagedBacking for fulfilling the behavior of the ORM, so you cannot rely on its behavior.
Implementation
ManagedBacking backing = ManagedValueBacking();