code: func (f *Fpdf) UseTemplate(t Template) {
  	if t == nil {
  		f.SetErrorf("template is nil")
  		return
  	}
  	corner, size := t.Size()
  	f.UseTemplateScaled(t, corner, size)
  }
docs: // UseTemplate adds a template to the current page or another template,
  // using the size and position at which it was originally written.