class_docstr: Validation for FileBasedImage instances
class_docstr_tok: ["Validation","for","FileBasedImage","instances"]
code: def make_imaker(self, arr, header=None):
      return lambda: self.image_maker(arr, header)
  
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 for calling the TestFBImageAPI obj's underlying member method code with example usage: obj.make_imaker(arr, header) and returns: function