if (!aTruthValue) return NS_RDF_NO_VALUE; return rv;
nsMsgAccountManagerDataSource::GetTarget(nsIRDFResource *source,                                         nsIRDFResource *property,                                         PRBool aTruthValue,                                         nsIRDFNode **target){  nsresult rv = NS_RDF_NO_VALUE;  if (!aTruthValue) return NS_RDF_NO_VALUE;  return rv;}