class_docstr: Defines common attributes and functions for workflows and nodes.
  
  Implements the more general view of a task.
class_docstr_tok: ["Defines","common","attributes","and","functions","for","workflows","and","nodes",".","Implements","the","more","general","view","of","a","task","."]
docstr: Store this workflow element to a file.
docstr_tok: ["Store","this","workflow","element","to","a","file","."]
code: def save(self, filename=None):
      """Store this workflow element to a file."""
      if filename is None:
          filename = "temp.pklz"
      savepkl(filename, self)
  
imports: from copy import deepcopy
  import re
  import numpy
  from ...None import config
  from ...interfaces.base import DynamicTraitedSpec
  from ...utils.filemanip import loadpkl, savepkl
label_desc: Use image node_id 13 for calling the EngineBase obj's underlying member method code with example usage: obj.save(filename) without return types