def get_parent_glossary(self):
        parent = self.get_parent()
        if parent:
            return parent.get_complete_glossary()
        else:
            # use self.placeholder.glossary as the starting dictionary
            template = self.placeholder.page and self.placeholder.page.template or None
            return get_placeholder_conf('glossary', self.placeholder.slot, template=template, default={})
Update the t-digest with an iterable of values. This assumes all points have the 
dataset/ETHPy150Open jrief/djangocms-cascade/cmsplugin_cascade/models_base.py/CascadeModelBase.get_parent_glossary--crossover with--dataset/ETHPy150Open CamDavidsonPilon/tdigest/tdigest/tdigest.py/TDigest.batch_update