address review comments

Author: mdumandag

docs/using_python_client_with_hazelcast_imdg.rst

@@ -1672,7 +1672,7 @@ it:
     );
     """
 
-    client.sql.execute(mapping_query).result():
+    client.sql.execute(mapping_query).result()
 
     employees.set(1, HazelcastJsonValue({"name": "John Doe", "salary": 60000}))
     employees.set(2, HazelcastJsonValue({"name": "Jane Doe", "salary": 80000}))

hazelcast/sql.py

@@ -67,7 +67,7 @@ class SqlService(object):
 
         client = hazelcast.HazelcastClient()
 
-        result = client.sql.execute("SELECT * FROM person")
+        result = client.sql.execute("SELECT * FROM person").result()
 
         for row in result:
             print(row.get_object("person_id"))
@@ -1142,7 +1142,7 @@ def _is_closed(execute_response):
             otherwise.
         """
         return (
-            execute_response.row_page is None  # Just an update count
+            execute_response.row_metadata is None  # Just an update count
             or execute_response.row_page.is_last  # Single page result
         )