page/page.go
func (p PrintToPDFParams) WithMarginRight(marginRight float64) *PrintToPDFParams {
	p.MarginRight = marginRight
	return &p
}
func (p PrintToPDFParams) WithMarginRight(marginRight float64) *PrintToPDFParams {
	p.MarginRight = marginRight
	return &p
}
// WithMarginRight right margin in inches. Defaults to 1cm (~0.4 inches).