code: def __str__(self):
      str_repr = (
          "ImageType(name={}, shape={}, scale={}, bias={}, "
          + "color_layout={}, channel_first={})"
      )
      return str_repr.format(
          self.name,
          self.shape,
          self.scale,
          self.bias,
          self.color_layout,
          self.channel_first,
      )
  
imports: from enum import Enum
  from typing import Optional
  import numpy
  from coremltools.converters.mil.mil import types
  from coremltools.converters.mil.mil.types.symbolic import is_symbolic
  from coremltools.converters.mil.mil.types.type_mapping import is_builtin, numpy_type_to_builtin_type
label_desc: Use image node_id 3 for calling the ImageType obj's underlying member method code with example usage: obj.__str__() and returns: str_repr