fix #906 - secondary opening hours must be an array

src/main/java/com/google/maps/model/PlaceDetails.java

@@ -235,7 +235,7 @@ public enum RatingType {
    * DRIVE_THROUGH, PICKUP, or TAKEOUT) based on the types of the place. This field includes the
    * special_days subfield of all hours, set for dates that have exceptional hours.
    */
-  public OpeningHours secondaryOpeningHours;
+  public OpeningHours[] secondaryOpeningHours;
 
   /** Specifies if the place serves beer. */
   public Boolean servesBeer;

src/test/java/com/google/maps/issues/Issue906.java

@@ -0,0 +1,14 @@
+package com.google.maps.issues;
+
+import org.junit.Test;
+
+public class Issue906 {
+
+    @Test
+    public void test() {
+        // /maps/api/place/details/json
+        // https://maps.googleapis.com/maps/api/place/details/json?key=YOUR_API_KEY&placeid=ChIJTSQM7Smze0gR627zU4Cvkn4
+        // The above placeid is expired/not_found sadly and thus cannot be used to test the fix, thus TODO find a place that has the secondary_opening_hours field
+        // The example/test json provided in resources also does not contain a single example with this field
+    }
+}