old_contents: import glob
  import io
  
  
  class DataBroker(object):
      """
      Read data and apply transformation to it as necessary.
  
      Args:
          config: A `dict` containing the fuzzer configurations.
  
      Attributes:
          _data_path: Path to data files as specified in configuration.
          _data: A list of data loaded from data files.
      """
  
      def __init__(self, config):
          self._data_path = config.get('data_path')
          self._data = []
  
      def scan(self):
          """
          Scan data path data files and store the data file content to
          a data store.
  
          The contents are currently loaded eagerly when this method is
          invoked. Therefore, a large memory space may be required if
          there are numerous data.
          """
          for df in glob.iglob(self._data_path):
              with io.open(df, 'rt', encoding='utf-8') as f:
                  self._data += f.read().splitlines()
  
new_contents: import glob
  import io
  
  
  class DataBroker(object):
      """
      Read data from data files.
  
      Args:
          config: A `dict` containing the fuzzer configurations.
  
      Attributes:
          _data_path: Path to data files as specified in configuration.
          _data: A list of data loaded from data files.
      """
  
      def __init__(self, config):
          self._data_path = config.get('data_path')
          self._data = []
  
      def scan(self):
          """
          Scan data path data files and store the data file content to
          a data store.
  
          The contents are currently loaded eagerly when this method is
          invoked. Therefore, a large memory space may be required if
          there are numerous data.
          """
          for df in glob.iglob(self._data_path):
              with io.open(df, 'rt', encoding='utf-8') as f:
                  self._data += f.read().splitlines()
  
      @property
      def data(self):
          """The list containing loaded data contents."""
          return self._data
  
subject: Add data property for DataBroker class