c# - Cannot send a content-body with this verb-type for GET Calls -

i using extension method tohttprequestmessage() system.servicemodel.channels.messageextensionmethods

source code messageextensionmethods

i created httprequestmessage message using extension method in above link. used httprequestmessage sent via httpclient got following exception

cannot send content-body verb-type

cannot send content-body verb-type

does mean cannot use extension method or have specific get calls such not setting content-body?