code: def _read(self) -> Iterator[Dict]:
      try_to_import_cv2()
      import cv2
  
      im_bgr = cv2.imread(str(self.file_url))
      im_rgb = cv2.cvtColor(im_bgr, cv2.COLOR_BGR2RGB)
      assert (
          im_rgb is not None
      ), f"Failed to read image file {self.file_url}"
      yield {"data": im_rgb}
  
imports: from typing import Dict, Iterator
  from evadb.readers.abstract_reader import AbstractReader
  from evadb.utils.generic_utils import try_to_import_cv2
label_desc: Use image node_id 2 for calling the CVImageReader obj's underlying member method code with example usage: obj._read() without return types