OData version 4 CBS beta Get Entity

Get_Entity_question.txt

start UPDATE 01OCT2018
according to Dennis Ramondt (CBS Open Data) this is how it should work.
end   UPDATE 01OCT2018

Question about the `Get Entity` in OData version 4 CBS beta

If I want to retrieve the 23rd row of the Observations subtable of 900001NED, I can do this
in two ways. The data I get back is the same but the format is different. See res1 and res2 in last part of gist.

Questions: 
- is this the intended behaviour? And if so, why different formats?
- is there a place where I can post questions of this kind without troubling all followers of the LinkedIn group 
   `Centraal Bureau voor de Statistiek; Open Data` ?
- is there documentation about OData version 4 apart from the terrible 
   `http://docs.oasis-open.org/odata/odata/v4.0/odata-v4.0-part1-protocol.html` and friends? 

> res1 = httr::GET("https://beta.opendata.cbs.nl/OData4/CBS-Maatwerk/900001NED/Observations?$skip=22&$top=1")
> jsonlite::prettify(httr::content(res1,as="text"))
{
    "@odata.context": "https://beta.opendata.cbs.nl/OData4/CBS-Maatwerk/900001NED/$metadata#Observations",
    "value": [
        {
            "Id": 23,
            "Measure": "M00000001",
            "ValueAttribute": "None",
            "Value": 1040.0,
            "PostCode6": "1011BW",
            "Typegebruik": "A045558"
        }
    ]
}
 
> res2 = httr::GET("https://beta.opendata.cbs.nl/OData4/CBS-Maatwerk/900001NED/Observations(23)")
> jsonlite::prettify(httr::content(res2,as="text"))
{
    "@odata.context": "https://beta.opendata.cbs.nl/OData4/CBS-Maatwerk/900001NED/$metadata#Observations/$entity",
    "Id": 23,
    "Measure": "M00000001",
    "ValueAttribute": "None",
    "Value": 1040.0,
    "PostCode6": "1011BW",
    "Typegebruik": "A045558"
}