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