code: func (h *HeatmapDefinition) GetYaxisOk() (WidgetAxis, bool) {
  	if h == nil || h.Yaxis == nil {
  		return WidgetAxis{}, false
  	}
  	return *h.Yaxis, true
  }
docs: // GetYaxisOk returns a tuple with the Yaxis field if it's non-nil, zero value otherwise
  // and a boolean to check if the value has been set.