update to include metadata docstrings

Author: jtsodapop

labelbox/schema/batch.py

@@ -89,6 +89,7 @@ def export_data_rows(self,
 
         Args:
             timeout_seconds (float): Max waiting time, in seconds.
+            include_metadata (bool): True to return related DataRow metadata
         Returns:
             Generator that yields DataRow objects belonging to this batch.
         Raises:

labelbox/schema/dataset.py

@@ -481,6 +481,7 @@ def export_data_rows(self,
 
         Args:
             timeout_seconds (float): Max waiting time, in seconds.
+            include_metadata (bool): True to return related DataRow metadata
         Returns:
             Generator that yields DataRow objects belonging to this dataset.
         Raises:

labelbox/schema/project.py

@@ -193,6 +193,7 @@ def export_queued_data_rows(
 
         Args:
             timeout_seconds (float): Max waiting time, in seconds.
+            include_metadata (bool): True to return related DataRow metadata
         Returns:
             Data row fields for all data rows in the queue as json
         Raises: