public EmailSetting(Industry industry, bool emailingIsDisabled)
 {
     Industry           = industry;
     EmailingIsDisabled = emailingIsDisabled;
 }
 public EmailSetting ChangeIndustry(Industry industry)
 {
     return(new EmailSetting(industry, EmailingIsDisabled));
 }
 public Customer(CustomerName name, Email primaryEmail, Maybe <Email> secondaryEmail, Industry industry)
 {
     _name          = name;
     _primaryEmail  = primaryEmail;
     SecondaryEmail = secondaryEmail;
     EmailSetting   = new EmailSetting(industry, false);
     Status         = CustomerStatus.Regular;
 }