code: def __init__(self):
      self.obj = {}
  
imports: import math
  import uuid
  import click
  import pytest
  from rasterio.enums import ColorInterp
  from rasterio.rio.options import bounds_handler, file_in_handler, like_handler, edit_nodata_handler, nodata_handler, _cb_key_val
label_desc: Use image node_id 1 to create a new MockContext object  with example: obj = MockContext()