gistfile1.txt

For example, you have a part of content to be passed to different tags as callback, and you except the tag will change the content by passing arguments, as shown below:

bc. @lookupRole(permission: "superuser").callback(List<Role> roleList) {
    <ul>
    @for(Role role: roleList) {
        <li>role.getName()</li>
    }
    </ul>
}

Later you decide to grab a list of roles with another permission:

bc. @lookupRole(permission: "db-admin").callback(List<Role> roleList) {
    <ul>
    @for(Role role: roleList) {
        <li>role.getName()</li>
    }
    </ul>
}

And you found it's tedious to write the the same code