class_docstr: Mark an instantaneous event that occurred at some point.
  
  Args:
      msg: ASCII message to associate with range
class_docstr_tok: ["Mark","an","instantaneous","event","that","occurred","at","some","point",".","Args",":","msg",":","ASCII","message","to","associate","with","range"]
code: def mark(self):
      _nvtx.markA(self.msg)
  
imports: from __future__ import annotations
  from typing import TYPE_CHECKING
  from monai.config import IgniteInfo
  from monai.utils import ensure_tuple, min_version, optional_import
label_desc: Use image node_id 3 for calling the MarkHandler obj's underlying member method code with example usage: obj.mark() without return types