final DateTime updateDate = JsonParseUtil.parseDateTime(getFieldStringUnisex(s, UPDATED_FIELD.id));
final String dueDateString = getOptionalFieldStringUnisex(shouldUseNestedValueAttribute, s, DUE_DATE_FIELD.id);
final DateTime dueDate = dueDateString == null ? null : JsonParseUtil.parseDateTimeOrDate(dueDateString);
final BasicPriority priority = getOptionalField(shouldUseNestedValueAttribute, s, PRIORITY_FIELD.id, priorityJsonParser);
final BasicResolution resolution = getOptionalField(shouldUseNestedValueAttribute, s, RESOLUTION_FIELD.id, resolutionJsonParser);
final BasicUser assignee = getOptionalField(shouldUseNestedValueAttribute, s, ASSIGNEE_FIELD.id, userJsonParser);
final BasicUser reporter = getOptionalField(shouldUseNestedValueAttribute, s, REPORTER_FIELD.id, userJsonParser);
final BasicProject project = projectJsonParser.parse(getFieldUnisex(s, PROJECT_FIELD.id));