ElectricPotentialDifferenceUnits constructor
      
      ElectricPotentialDifferenceUnits(])
     
    
Constructs a instance.
Implementation
ElectricPotentialDifferenceUnits(String name, String? abbrev1,
    String? abbrev2, String? singular, dynamic conv,
    [bool metricBase = false, num offset = 0.0])
    : super.misc(conv) {
  this.name = name;
  this.singular = singular;
  convToMKS = objToNumber(conv);
  this.abbrev1 = abbrev1;
  this.abbrev2 = abbrev2;
  this.metricBase = metricBase;
  this.offset = offset.toDouble();
}