}
else group = model;
// 2°) Second step, we build a rewriter from the compilation unit
AST ast = u.getAST();
ImportDeclaration id = ast.newImportDeclaration();
id.setName(ast.newName(new String[] {"java", "util", "Set"}));
ASTRewrite rewriter = ASTRewrite.create(ast);
// 3°) Third step, we can process the type declaration
if(t.isInterface()) {
result = new InterfaceService(t, group, rewriter, u);
}