code: def __init__(self, arr, header=None, extra=None, file_map=None):
      super().__init__(header, extra, file_map)
      self.arr = arr
  
imports: import warnings
  from itertools import product
  import numpy
  import pytest
  from ..filebasedimages import FileBasedHeader, FileBasedImage, SerializableImage
  from .test_image_api import GenericImageAPI, SerializeMixin
label_desc: Use image node_id 1 to create a new FBNumpyImage object from inherited base classes: FileBasedImage with example: obj = FBNumpyImage(arr, header, extra, file_map)