func (g *GraphDefinition) GetStyle() Style {
	if g == nil || g.Style == nil {
		return Style{}
	}
	return *g.Style
}
func (g *GraphDefinition) GetStyle() Style {
	if g == nil || g.Style == nil {
		return Style{}
	}
	return *g.Style
}
// GetStyle returns the Style field if non-nil, zero value otherwise.