class_docstr: internal structure for storing marks belonging to a node
  
  ..warning::
  
      unstable api
class_docstr_tok: ["internal","structure","for","storing","marks","belonging","to","a","node","..","warning",":",":","unstable","api"]
code: def __iter__(self):
      return iter(self.own_markers)
  
imports: import inspect
  import warnings
  from collections import namedtuple
  from operator import attrgetter
  import attr
  import six
  from ..compat import ascii_escaped
  from ..compat import ATTRS_EQ_FIELD
  from ..compat import getfslineno
  from ..compat import MappingMixin
  from ..compat import NOTSET
  from _pytest.deprecated import PYTEST_PARAM_UNKNOWN_KWARGS
  from _pytest.outcomes import fail
  from _pytest.warning_types import PytestUnknownMarkWarning
label_desc: Use image node_id 3 for calling the NodeMarkers obj's underlying member method code with example usage: obj.__iter__() and returns: iter