return new NamePair(makeLabelledNode(self.getRelativeName()));
return new NamePair(makeLabelledNode(self.getIdent()));
    public Object visitFilter(SIRFilter self,                              SIRStream parent,                              JFieldDeclaration[] fields,                              JMethodDeclaration[] methods,                              JMethodDeclaration init,                              JMethodDeclaration work,                              CType inputType, CType outputType)    {        // Return a name pair with both ends pointing to this.        return new NamePair(makeLabelledNode(self.getRelativeName()));    }