code: def __init__(
      self,
      path: str,
      column: str,
      *,
      file_format: str = "npy",
      **file_datasink_kwargs,
  ):
      super().__init__(
          path, file_format=file_format, **file_datasink_kwargs
      )
  
      self.column = column
  
file_path: ray/python/ray/data/datasource/numpy_datasink.py
imports: import numpy
  import pyarrow
  from ray.data.block import BlockAccessor
  from ray.data.datasource.file_datasink import BlockBasedFileDatasink
label_desc: Use image node_id 1 to create a new _NumpyDatasink object from inherited base classes: BlockBasedFileDatasink with example: obj = _NumpyDatasink(path, column)