Description
['The provided code appears to be a function that summarizes text using sentence extraction. However, there are potential issues with how it handles invalid inputs.', 'Current Behavior:', 'The code assumes that the input text is valid and does not perform any checks for empty or null inputs. If an empty string or null value is passed as the input, the code will fail without providing any error message or handling.', 'Expected Behavior:', 'The function should gracefully handle invalid inputs and provide informative error messages to the user.', 'Possible Solutions:', 'Add a check at the beginning of the function to ensure that the input text is not empty or null.', 'If the input is invalid, raise a ValueError or TypeError with a clear error message.', 'Alternatively, you could return an empty string or a default value to indicate that the input was invalid.']