code: def mode(self):
      return self.mean
  
imports: import numpy
  import paddle
  import paddle.nn
  from ..configuration_utils import ConfigMixin
  from ..configuration_utils import register_to_config
  from .unet_blocks import get_down_block
  from .unet_blocks import get_up_block
  from .unet_blocks import UNetMidBlock2D
label_desc: Use image node_id 5 for calling the DiagonalGaussianDistribution obj's underlying member method code with example usage: obj.mode() and returns: self