Assigns a flag definition to a piece of content. 

This method can be accessed through the Flagging.asmx file located in:

~/Workarea/webservices/WebServiceAPI/Community/Flag.asmx

[SoapHeader("AuthHeader")]
[SoapHeader("RequestInfoHeader")]
[WebMethod(MessageName = "AssignFlagToContent", Description = "assign flag definition to content")]
public void AssignFlagToContent(long contentId, long flagId);

<SoapHeader("AuthHeader")>
<SoapHeader("RequestInfoHeader")>
<WebMethod(MessageName = "AssignFlagToContent", Description = "assign flag definition to content")>
Public Function AssignFlagToContent(contentId As long, flagId As long) As void