code: def _validate_dependencies(self, dependencies, field, value):
          
          if isinstance(dependencies, _str_type) or not isinstance(
              dependencies, (Iterable, Mapping)
          ):
              dependencies = (dependencies,)
  
          if isinstance(dependencies, Sequence):
              self.__validate_dependencies_sequence(dependencies, field)
          elif isinstance(dependencies, Mapping):
              self.__validate_dependencies_mapping(dependencies, field)
  
          if (
              self.document_error_tree.fetch_node_from(
                  self.schema_path + (field, 'dependencies')
              )
              is not None
          ):
              return True
docs: {'type': ('dict', 'hashable', 'list'),
               'check_with': 'dependencies'}