num optimum

Source 

@DomName('HTMLMeterElement.optimum')
@DocsEditable()
num get optimum => _blink.BlinkHTMLMeterElement.instance.optimum_Getter_(this);
void optimum=(num value)

Source 

@DomName('HTMLMeterElement.optimum')
@DocsEditable()
set optimum(num value) => _blink.BlinkHTMLMeterElement.instance.optimum_Setter_(this, value);