class_docstr: Reads a variety of image formats using the bio-formats library.
  
  This reader is Java-based.
class_docstr_tok: ["Reads","a","variety","of","image","formats","using","the","bio-formats","library",".","This","reader","is","Java-based","."]
code: def _ensure_file_open(self):
      if not self._is_file_open:
          self.get_reader().setId(self.file.path)
          self._is_file_open = True
  
file_path: CellProfiler/src/subpackages/core/cellprofiler_core/readers/bioformats_reader.py
imports: import collections
  import itertools
  import logging
  import numpy
  import scyjava
  from ..utilities.image import is_file_url
  from ..utilities.java import jimport
  from ..constants.image import MD_SIZE_S, MD_SIZE_C, MD_SIZE_Z, MD_SIZE_T, MD_SIZE_Y, MD_SIZE_X, BIOFORMATS_IMAGE_EXTENSIONS
  from ..reader import Reader
label_desc: Use image node_id 3 for calling the BioformatsReader obj's underlying member method code with example usage: obj._ensure_file_open() without return types