When duplicating a resource with [method Resource.duplicate], and this flag is set on a property of that resource, the property should always be duplicated, regardless of the [code]subresources[/code] bool parameter.
Duplicates this resource, returning a new resource with its [code]export[/code]ed or [constant PROPERTY_USAGE_STORAGE] properties copied from the original.
If [param subresources] is [code]false[/code], a shallow copy is returned. Nested resources within subresources are not duplicated and are shared from the original resource. This behavior can be overridden by the [constant PROPERTY_USAGE_DO_NOT_SHARE_ON_DUPLICATE] flag.
If [param subresources] is [code]false[/code], a shallow copy is returned. Nested resources within subresources are not duplicated and are shared from the original resource. This behavior can be overridden by the [constant PROPERTY_USAGE_ALWAYS_DUPLICATE] flag.
[b]Note:[/b] For custom resources, this method will fail if [method Object._init] has been defined with required parameters.