public bool Equals(PersonPhone obj)
 {
     return(BusinessEntityId == obj.BusinessEntityId &&
            PhoneNumber == obj.PhoneNumber &&
            PhoneNumberType == obj.PhoneNumberType);
 }
 public bool Equals(PersonPhone obj)
 {
     return BusinessEntityId == obj.BusinessEntityId
         && PhoneNumber == obj.PhoneNumber
         && PhoneNumberType == obj.PhoneNumberType;
 }