Retrieve the list of streams or sub-streams of a stream.

{
    "operationName": "getstreams",
    "communication": {
        "token": "eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJBZG1pbiIsImlhdCI6MTc2NzE3ODAwMn0.dvbLHRMVcs8ctij4ZimuF8E1DJ-HqB49etqYMorDs64"
    },
    "operationArguments": {
        "streamSelector": "stream:AutoTestProj0001_Integration@/AutoTestPVOB"
    }
}
operationName: string 
"getstreams"
communication: object
token: string 
"eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJBZG1pbiIsImlhdCI6MTc2NzE3ODAwMn0.dvbLHRMVcs8ctij4ZimuF8E1DJ-HqB49etqYMorDs64"
operationArguments: object
streamSelector: string 
"stream:AutoTestProj0001_Integration@/AutoTestPVOB"