input: 
  def FileSystem(object):
      """ A Python class that provides methods for saving, deleting, and finding task data. 
      To use this class, import it and create an instance with a parameter dictionary 
      that includes a 'taskDir' key specifying the directory where task data should be stored. 
      Then call the methods on the instance as needed:
      - To save task data, call the save_task method with a dictionary containing the data. 
      If the dictionary does not already include an 'id' key, one will be generated and added 
      to the dictionary. The task data will be stored in a file in a subdirectory of the taskDir 
      directory named after the task ID.
      - To delete task data, call the delete_task method with the ID of the task to delete. 
      This will remove the subdirectory containing the task data.
      - To find task data by ID, call the find_by_id method with the ID of the task to find. 
      This will return the task data as a dictionary.
      - To find task data for multiple IDs, call the find_by_ids method with a list of IDs. 
      This will return a list of task data dictionaries.
      - To find all task data, call the all_task_data method. This will return a list of all 
      task data dictionaries, sorted by ID in ascending order by default (or descending order 
      if the 'order' parameter is set to 'desc').
      - To get task data for a specific ID without raising an error if the data is not found, 
      call the task_data method with the ID of the task to find. This will return the task data 
      as a dictionary, or None if the task data is not found.
  
      Example:
      >>> fs = FileSystem({'taskDir': '~/tasks/'})
      >>> fs.save_task({'name': 'Task1', 'description': 'First task'})
      >>> fs.find_by_id(1) == {'id': 1, 'name': 'Task1', 'description': 'First task'}
      True
      >>> fs.delete_task(1)
      >>> fs.find_by_id(1) == None
      True
      """
  
output:     
      def __init__(self, params):
          self.taskDir = params['taskDir']
          if not os.path.exists(self.taskDir):
              os.makedirs(self.taskDir)
  
      def save_task(self, task_data):
          if 'id' not in task_data:
              task_data['id'] = self._generate_id()
          task_dir = os.path.join(self.taskDir, str(task_data['id']))
          if not os.path.exists(task_dir):
              os.makedirs(task_dir)
          with open(os.path.join(task_dir, 'task_data.json'), 'w') as f:
              json.dump(task_data, f)
  
      def delete_task(self, task_id):
          task_dir = os.path.join(self.taskDir, str(task_id))
          if os.path.exists(task_dir):
              shutil.rmtree(task_dir)
  
      def find_by_id(self, task_id):
          task_dir = os.path.join(self.taskDir, str(task_id))
          task_file = os.path.join(task_dir, 'task_data.json')
          if os.path.exists(task_file):
              with open(task_file, 'r') as f:
                  return json.load(f)
          return None
  
      def find_by_ids(self, task_ids):
          return [self.find_by_id(task_id) for task_id in task_ids]
  
      def all_task_data(self, order='asc'):
          task_dirs = [d for d in os.listdir(self.taskDir) if os.path.isdir(os.path.join(self.taskDir, d))]
          task_dirs.sort(reverse=(order == 'desc'))
          return [self.find_by_id(task_id) for task_id in task_dirs]
  
      def task_data(self, task_id):
          return self.find_by_id(task_id)
  
      def _generate_id(self):
          task_dirs = [d for d in os.listdir(self.taskDir) if os.path.isdir(os.path.join(self.taskDir, d))]
          return str(len(task_dirs) + 1)
  