class_docstr: Set marker for an instant in time.
  
  The marker event marks a particular instant in time across some scope boundaries.
  
  Parameters
  ----------
  domain : Domain object
      Domain to which this object belongs
  name : string
      Name of the marker
code: def __init__(self, domain, name):
      self.name = name
      self.domain = domain
  
imports: import ctypes
  import contextlib
  import contextvars
  import warnings
  from .base import _LIB, check_call, c_str, ProfileHandle, c_str_array, py_str, KVStoreHandle
label_desc: Use image node_id 1 to create a new Marker object from inherited base classes: object with example: obj = Marker(domain, name)