sources.hasDependencyAlias(name, method)

        where:
        name                  | method
        'groovy'              | 'getGroovy'
        'groovy-json'         | 'getJson'
        'groovy.json'         | 'getJson'
        'groovyJson'          | 'getGroovyJson'
        'lang3'               | 'getLang3'
        'kotlinx.awesome.lib' | 'getLib'
    }

    book = json['items'][0]['volumeInfo']

    language = book['language'] === 'en'? 'English' : 'unknown'
    type = book['printType'] === 'BOOK'? 'paperback' : 'unknown'
    isbn10 = get_isbn(book, 'ISBN_10')
    isbn13 = get_isbn(book, 'ISBN_13')

    return {
        'id' => id,
        'author': book['authors'][0],
        'year': book['publishedDate'],
        'type' => type,

			} else if err != nil {
				return
			}
			if got := v.Elem().Interface(); !reflect.DeepEqual(got, tt.out) {
				gotJSON, _ := Marshal(got)
				wantJSON, _ := Marshal(tt.out)
				t.Fatalf("%s: Decode:\n\tgot:  %#+v\n\twant: %#+v\n\n\tgotJSON:  %s\n\twantJSON: %s", tt.Where, got, tt.out, gotJSON, wantJSON)
			}

			// Check round trip also decodes correctly.
			if tt.err == nil {