| cb | Object of a class that implements the IShouldIncludeInBuildCallback interface. |
Register a callback object for a package.
The Unity Package Manager invokes the IShouldIncludeInBuildCallback.ShouldIncludeInBuild callback for each file in the package identified by IShouldIncludeInBuildCallback.PackageName. The callback implementation must return true for resources that should be included in the build and false for resources that should be excluded.
Only one IShouldIncludeInBuildCallback callback object can be registered for each package.