code: def get_short_name(cls):
      return "mppca"
  
imports: import logging
  import shutil
  import numpy
  from dipy.core.gradients import gradient_table
  from dipy.io.gradients import read_bvals_bvecs
  from dipy.io.image import load_nifti, save_nifti
  from dipy.denoise.patch2self import patch2self
  from dipy.denoise.nlmeans import nlmeans
  from dipy.denoise.localpca import localpca, mppca
  from dipy.denoise.gibbs import gibbs_removal
  from dipy.denoise.noise_estimate import estimate_sigma
  from dipy.denoise.pca_noise_estimate import pca_noise_estimate
  from dipy.workflows.workflow import Workflow
  from dipy.utils.deprecator import deprecated_params
label_desc: Use image node_id 1 for calling the MPPCAFlow obj's underlying member method code with example usage: obj.get_short_name(cls) and returns: str