text: import _plotly_utils.basevalidators
  
  
  class YrefValidator(_plotly_utils.basevalidators.EnumeratedValidator):
      def __init__(self, plotly_name="yref", parent_name="layout.annotation", **kwargs):
          super(YrefValidator, self).__init__(
              plotly_name=plotly_name,
              parent_name=parent_name,
              edit_type=kwargs.pop("edit_type", "calc"),
              role=kwargs.pop("role", "info"),
              values=kwargs.pop(
                  "values", ["paper", "/^y([2-9]|[1-9][0-9]+)?( domain)?$/"]
              ),
              **kwargs
          )
  