code: def _latitude_bounds(self, latitudes):
      return bounds.latitude_bounds(latitudes)
  
imports: import ipywidgets
  from traitlets import Float, Bool, Unicode, HasTraits, default, List, observe
  from .None import bounds
  from .locations import locations_docstring
  from .None import geotraitlets
  from .maps import GMapsWidgetMixin
  from ._docutils import doc_subst
label_desc: Use image node_id 3 for calling the _HeatmapOptionsMixin obj's underlying member method code with example usage: obj._latitude_bounds(latitudes) and returns: bounds