test-fixtures/addMissingField338/cd/record.json
{
"leader": "12345cam a22123454i 4500",
"fields": [
{ "tag": "008", "value": "012345s2000 xxu|||||s|||||||||||fin| " },
{ "tag": "040", "ind1": " ", "ind2": " ", "subfields": [ { "code": "b", "value": "mul" } ]},
{ "tag": "300", "ind1": " ", "ind2": " ", "subfields": [ { "code": "a", "value": "1 CD-levy (random stuff)" } ]}
]
}