Address PR feedback: Add type hints and improve docstrings

Co-Authored-By: Joe Moura <joao@crewai.com>

tests/context_empty_list_test.py

@@ -1,7 +1,8 @@
 """Test that context=[] is respected and doesn't include previous task outputs."""
-import pytest
 from unittest import mock
 
+import pytest
+
 from crewai import Agent, Crew, Process, Task
 from crewai.tasks.task_output import OutputFormat, TaskOutput
 from crewai.utilities.formatter import (
@@ -9,8 +10,19 @@ from crewai.utilities.formatter import (
     aggregate_raw_outputs_from_tasks,
 )
 
+
 def test_context_empty_list():
-    """Test that context=[] is respected and doesn't include previous task outputs."""
+    """Test that context=[] is respected and doesn't include previous task outputs.
+    
+    This test verifies that when a task has context=[], the _get_context method
+    correctly uses task_outputs instead of an empty context list.
+    
+    Returns:
+        None
+        
+    Raises:
+        AssertionError: If the context handling doesn't work as expected
+    """
     
     
     researcher = Agent(