Resolves a shape's own class.
Resolves shape to its target resource shape, then takes its own class (its target class). Yields undefined when shape resolves to no resource shape or it declares no class.
shape
class
undefined
One of the range variants
The own class, or undefined when absent
If shape transitively references itself, producing a circular extends chain
Resolves a shape's own class.
Resolves
shapeto its target resource shape, then takes its ownclass(its target class). Yieldsundefinedwhenshaperesolves to no resource shape or it declares no class.