code: def __str__(self):
      return f"{self.component_id_str()}.{self.component_property}"
  
imports: import json
  from dash.development.base_component import Component
  from ._validate import validate_callback
  from ._grouping import flatten_grouping, make_grouping_by_index
label_desc: Use image node_id 2 for calling the DashDependency obj's underlying member method code with example usage: obj.__str__() and returns: self, str, self