class_docstr: Class for detecting text data during its import.
class_docstr_tok: ["Class","for","detecting","text","data","during","its","import","."]
code: def is_full_of_nans(text_data: np.array) -> bool:
      if (
          np.sum(pd.isna(text_data)) / len(text_data)
          > ALLOWED_NAN_PERCENT
      ):
          return True
      return False
  
imports: from abc import abstractmethod
  from typing import List
  import numpy
  import pandas
  from fedot.core.constants import FRACTION_OF_UNIQUE_VALUES
  from fedot.utilities.custom_errors import AbstractMethodNotImplementError
label_desc: Use image node_id 2 for calling the TextDataDetector obj's underlying member method code with example usage: obj.is_full_of_nans(text_data) and returns: False, True