These files payload stages from different locations on disk. If loaded successfully, a single cube should be visible.
 usdrecord 22.08
usdrecord 22.08
#usda 1.0
(
    customLayerData = {
        string copyright = "Copyright 2022 Apple Inc. All rights reserved."
    }
    upAxis = "Y"
    metersPerUnit = 0.01
    defaultPrim = "World"
)
def "World"
{
    def "invalid_payload" (
        payload = @file_does_not_exist.usda@
    )
    {
    }
    def Cube "cube"
    {
    }
}