page/page.go
func (p PrintToPDFParams) WithScale(scale float64) *PrintToPDFParams {
	p.Scale = scale
	return &p
}
func (p PrintToPDFParams) WithScale(scale float64) *PrintToPDFParams {
	p.Scale = scale
	return &p
}
// WithScale scale of the webpage rendering. Defaults to 1.