toMap method
Conversio customer to Map
Implementation
Map toMap() {
Map map = Map();
if (id != null) map[_ID] = id;
if (customerId != null) map[_CUSTOMER_ID] = customerId;
if (updateAt != null) map[_UPDATED_AT] = updateAt;
if (applicationId != null) map[_APPLICATION_ID] = applicationId;
if (createdAt != null) map[_CREATED_AT] = createdAt;
return map;
}