Alias for line item values

curl --request GET \
  --url https://mkk.celebi.me/api/key-values

{
  "line_item_values": [
    {
      "id": 123,
      "document_id": 123,
      "disclosure_index": "<string>",
      "file_name": "<string>",
      "fund_code": "<string>",
      "fund_title": "<string>",
      "period": "<string>",
      "line_item_id": 123,
      "line_item_slug": "<string>",
      "line_item_name": "<string>",
      "sectionId": "<string>",
      "sectionName": "<string>",
      "canonical_section": "<string>",
      "kind": "<string>",
      "raw_section": "<string>",
      "raw_label": "<string>",
      "value": "<string>",
      "numeric_value": 123,
      "unit": "<string>",
      "source": "<string>",
      "mapping_method": "<string>",
      "mapping_confidence": 123
    }
  ]
}