class_docstr: This is the base class that all argcomplete completers should subclass.
class_docstr_tok: ["This","is","the","base","class","that","all","argcomplete","completers","should","subclass","."]
code: def __call__(
      self,
      *,
      prefix: str,
      action: argparse.Action,
      parser: argparse.ArgumentParser,
      parsed_args: argparse.Namespace,
  ):
      raise NotImplementedError(
          "This method should be implemented by a subclass."
      )
  
imports: import argparse
  import os
  import subprocess
label_desc: Use image node_id 1 for calling the BaseCompleter obj's underlying member method code with example usage: obj.__call__() without return types