code: def p_sampling_fn(self):
      pass
  
file_path: NeMo/nemo/collections/multimodal/models/text_to_image/stable_diffusion/samplers/sampler_dpm.py
imports: import torch
  from nemo.collections.multimodal.models.text_to_image.stable_diffusion.samplers import Sampler
  from nemo.collections.multimodal.models.text_to_image.stable_diffusion.samplers.base_sampler import AbstractBaseSampler
  from .dpmsolver import DPMSolver, NoiseScheduleVP, model_wrapper
label_desc: Use image node_id 2 for calling the DPMSolverSampler obj's underlying member method code with example usage: obj.p_sampling_fn() without return types