initProps method
void
initProps()
This method initializes the _accessors
map with the object's properties
and their corresponding getter and setter functions. The
getTweenableAccessors method should be implemented in the target object
class and should return a map of property names and their corresponding
getter and setter functions. If no such map is returned, the _accessors
map remains null.
Implementation
void initProps() {
_accessors = getTweenableAccessors();
}