ABL Dojo rest request samples fail to compile

sample copied from the manual does not compile.

Probably propath issue, see https://documentation.progress.com/output/ua/OpenEdge_latest/index.html#page/dvpin%2Fconfiguration.html%23

https://abldojo.services.progress.com:443/#/?shareId=591b1281132679685cb7ce9b

Could not find class or interface OpenEdge.Net.HTTP.IHttpResponse. (12886)
** Main.p Could not understand line 6. (196)
Could not find class or interface OpenEdge.Net.HTTP.ClientBuilder. (12886)
** Main.p Could not understand line 7. (196)
Could not find class or interface OpenEdge.Net.HTTP.RequestBuilder. (12886)
** Main.p Could not understand line 8. (196)
Could not find class or interface OpenEdge.Net.HTTP.IHttpRequest. (12886)
** Main.p Could not understand line 9. (196)
Invalid datatype specified: IHttpRequest. Specify a datatype such as 'character' or the name of a class. (5638)
** Main.p Could not understand line 12. (196)
** Unable to run startup procedure Main.p. (492)