Paging does not work for virtual assets in IGC 11.5

[cmgrote]

There appears to be a bug in IGC v11.5 that means its paging URLs for properties within virtual assets are not fully constructed. Instead of something like the following for the next paging property:

{
  "paging": {
    "numTotal":8,
    "next":"https://infosvr:9446/ibm/iis/igc-rest/v1/assets/extern:fr:7599ac3c8e0d4869b032d151e8ffc86d/database_columns?begin=5&pageSize=5",
    "pageSize":5,
    "end":4,
    "begin":0
  },
  "items": [...]
}

in v11.5 there is only the following (only on virtual assets):

{
  "paging": {
    "numTotal":8,
    "next":"extern:fr:7599ac3c8e0d4869b032d151e8ffc86d",
    "pageSize":5,
    "end":4,
    "begin":0
  },
  "items": [...]
}

This prevents all of the detailed related virtual assets from being retrievable by navigating the paging properties alone -- instead, additional context must be passed around to be able to properly navigate the pages.