Fix import

Author: cindy-peng

com/google/datastore/snippets/ConceptsTest.java

@@ -24,10 +24,31 @@
 import static org.junit.Assert.assertNull;
 
 import com.google.cloud.Timestamp;
-import com.google.cloud.datastore.*;
+import com.google.cloud.datastore.Cursor;
+import com.google.cloud.datastore.Datastore;
+import com.google.cloud.datastore.DatastoreException;
+import com.google.cloud.datastore.DatastoreOptions;
+import com.google.cloud.datastore.Entity;
+import com.google.cloud.datastore.EntityQuery;
+import com.google.cloud.datastore.FullEntity;
+import com.google.cloud.datastore.IncompleteKey;
+import com.google.cloud.datastore.Key;
+import com.google.cloud.datastore.KeyFactory;
+import com.google.cloud.datastore.KeyQuery;
+import com.google.cloud.datastore.ListValue;
+import com.google.cloud.datastore.VectorValue;
+import com.google.cloud.datastore.FindNearest;
+import com.google.cloud.datastore.PathElement;
+import com.google.cloud.datastore.ProjectionEntity;
+import com.google.cloud.datastore.Query;
+import com.google.cloud.datastore.QueryResults;
+import com.google.cloud.datastore.ReadOption;
+import com.google.cloud.datastore.StringValue;
+import com.google.cloud.datastore.StructuredQuery;
 import com.google.cloud.datastore.StructuredQuery.CompositeFilter;
 import com.google.cloud.datastore.StructuredQuery.OrderBy;
 import com.google.cloud.datastore.StructuredQuery.PropertyFilter;
+import com.google.cloud.datastore.Transaction;
 import com.google.cloud.datastore.testing.LocalDatastoreHelper;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;