Ref

https://h.api.crmls.org/RESO/OData/Property(579274)/Media/$ref

{
  "@odata.context": "https://h.api.crmls.org/RESO/OData/$metadata#Collection($ref)",
  "value": [
    {
      "@odata.id": "https://h.api.crmls.org/RESO/OData/Media(6305428)"
    },
    .
	.
	.
    {
      "@odata.id": "https://h.api.crmls.org/RESO/OData/Media(58446471)"
    }
  ]
}

https://h.api.crmls.org/RESO/OData/Property(579274)/PropertyUnits/$ref

Count

https://h.api.crmls.org/RESO/OData/Property(579274)/Media/$count

20

https://h.api.crmls.org/RESO/OData/Property(579274)/Media/$ref?$count=true

Value

https://h.api.crmls.org/RESO/OData/Property(579274)/PropertyUnits(67)/UnitTypeBedsTotal/$value

4