class_docstr: Abstract class for resources.
class_docstr_tok: ["Abstract","class","for","resources","."]
code: def source(self) -> Optional[job.Job]:
      pass
  
imports: import abc
  from typing import Optional, Set, cast, Union
  from .None import job
  from .exceptions import BatchException
label_desc: Use image node_id 1 for calling the Resource obj's underlying member method code with example usage: obj.source() without return types