code: def image_array_1band_stretch():
      return np.random.randint(10, 246, size=(50, 50))
  
imports: import numpy
  import numpy.ma
  import matplotlib.pyplot
  import pytest
  import rasterio
  from rasterio.plot import plotting_extent
  from earthpy.plot import plot_rgb, _stretch_im
  from earthpy.io import path_to_example
label_desc: Use image node_id 1 for calling a global function with example usage: image_array_1band_stretch() and returns: np