nsDocumentEncoder::EncodeToStringWithContext(nsAString& aEncodedString,
nsHTMLCopyEncoder::EncodeToStringWithContext(nsAString& aEncodedString,
nsDocumentEncoder::EncodeToStringWithContext(nsAString& aEncodedString,                                              nsAString& aContextString,                                             nsAString& aInfoString){  return NS_ERROR_NOT_IMPLEMENTED;}