gistfile1.txt

apply plugin: DocumentationPlugin

authors {
    gradle {
        quickStart {
            sourceFile = file('src/docs/quick-start')
        }
        
        userGuide {
        }
        
        developerGuide {
        }
    }
    
    sean_gillespie {
        greatMysteryNovel {
        }
    }
}


task books << {
    authors.each { author -> 
        author.each { book ->
            println "$book.name -> $book.sourceFile"
        }
    }
}

class DocumentationPlugin implements Plugin<Project> {
    void apply(Project project) {
        def authors = project.container(Author)

        authors.all { author ->
            books = project.container(Book)  // This doesn't quite work
            books.all { book ->
                book.sourceFile = project.file("src/docs/$name")
            }
        }

        project.extensions.authors = authors
    }
}

class Book {
    final String name
    File sourceFile

    Book(String name) {
        this.name = name
    }
}

class Author {
    final String name
    NamedDomainObjectContainer<Book> books

    Author(String name) {
        this.name = name
    }
}