Update docs.
diff --git a/docs/dyn/books_v1.volumes.recommended.html b/docs/dyn/books_v1.volumes.recommended.html
index 93a9eac..8039c59 100644
--- a/docs/dyn/books_v1.volumes.recommended.html
+++ b/docs/dyn/books_v1.volumes.recommended.html
@@ -172,11 +172,25 @@
         "etag": "A String", # Opaque identifier for a specific version of a volume resource. (In LITE projection)
         "selfLink": "A String", # URL to this resource. (In LITE projection.)
         "volumeInfo": { # General volume information.
-          "publisher": "A String", # Publisher of this volume. (In LITE projection.)
           "subtitle": "A String", # Volume subtitle. (In LITE projection.)
-          "description": "A String", # A synopsis of the volume. The text of the description is formatted in HTML and includes simple formatting elements, such as b, i, and br tags. (In LITE projection.)
-          "language": "A String", # Best language for this volume (based on content). It is the two-letter ISO 639-1 code such as 'fr', 'en', etc.
           "pageCount": 42, # Total number of pages as per publisher metadata.
+          "mainCategory": "A String", # The main category to which this volume belongs. It will be the category from the categories list returned below that has the highest weight.
+          "dimensions": { # Physical dimensions of this volume.
+            "width": "A String", # Width of this volume (in cm).
+            "thickness": "A String", # Thickness of this volume (in cm).
+            "height": "A String", # Height or length of this volume (in cm).
+          },
+          "previewLink": "A String", # URL to preview this volume on the Google Books site.
+          "contentVersion": "A String", # An identifier for the version of the volume content (text & images). (In LITE projection)
+          "industryIdentifiers": [ # Industry standard identifiers for this volume.
+            {
+              "identifier": "A String", # Industry specific volume identifier.
+              "type": "A String", # Identifier type. Possible values are ISBN_10, ISBN_13, ISSN and OTHER.
+            },
+          ],
+          "canonicalVolumeLink": "A String", # Canonical URL for a volume. (In LITE projection.)
+          "description": "A String", # A synopsis of the volume. The text of the description is formatted in HTML and includes simple formatting elements, such as b, i, and br tags. (In LITE projection.)
+          "publishedDate": "A String", # Date of publication. (In LITE projection.)
           "imageLinks": { # A list of image links for all the sizes that are available. (In LITE projection.)
             "medium": "A String", # Image link for medium size (width of ~575 pixels). (In LITE projection)
             "smallThumbnail": "A String", # Image link for small thumbnail size (width of ~80 pixels). (In LITE projection)
@@ -185,34 +199,21 @@
             "small": "A String", # Image link for small size (width of ~300 pixels). (In LITE projection)
             "thumbnail": "A String", # Image link for thumbnail size (width of ~128 pixels). (In LITE projection)
           },
-          "publishedDate": "A String", # Date of publication. (In LITE projection.)
-          "previewLink": "A String", # URL to preview this volume on the Google Books site.
-          "printType": "A String", # Type of publication of this volume. Possible values are BOOK or MAGAZINE.
-          "ratingsCount": 42, # The number of review ratings for this volume.
-          "mainCategory": "A String", # The main category to which this volume belongs. It will be the category from the categories list returned below that has the highest weight.
-          "dimensions": { # Physical dimensions of this volume.
-            "width": "A String", # Width of this volume (in cm).
-            "thickness": "A String", # Thickness of this volume (in cm).
-            "height": "A String", # Height or length of this volume (in cm).
-          },
-          "contentVersion": "A String", # An identifier for the version of the volume content (text & images). (In LITE projection)
-          "printedPageCount": 42, # Total number of printed pages in generated pdf representation.
-          "industryIdentifiers": [ # Industry standard identifiers for this volume.
-            {
-              "identifier": "A String", # Industry specific volume identifier.
-              "type": "A String", # Identifier type. Possible values are ISBN_10, ISBN_13, ISSN and OTHER.
-            },
-          ],
           "authors": [ # The names of the authors and/or editors for this volume. (In LITE projection)
             "A String",
           ],
-          "title": "A String", # Volume title. (In LITE projection.)
-          "canonicalVolumeLink": "A String", # Canonical URL for a volume. (In LITE projection.)
-          "infoLink": "A String", # URL to view information about this volume on the Google Books site. (In LITE projection)
           "categories": [ # A list of subject categories, such as "Fiction", "Suspense", etc.
             "A String",
           ],
+          "publisher": "A String", # Publisher of this volume. (In LITE projection.)
+          "language": "A String", # Best language for this volume (based on content). It is the two-letter ISO 639-1 code such as 'fr', 'en', etc.
+          "readingModes": "", # The reading modes available for this volume.
+          "title": "A String", # Volume title. (In LITE projection.)
+          "printType": "A String", # Type of publication of this volume. Possible values are BOOK or MAGAZINE.
+          "printedPageCount": 42, # Total number of printed pages in generated pdf representation.
           "averageRating": 3.14, # The mean review rating for this volume. (min = 1.0, max = 5.0)
+          "infoLink": "A String", # URL to view information about this volume on the Google Books site. (In LITE projection)
+          "ratingsCount": 42, # The number of review ratings for this volume.
         },
         "recommendedInfo": { # Recommendation related information for this volume.
           "explanation": "A String", # A text explaining why this volume is recommended.