SRU service
| query | string CQL query |
| startRecord | integer >= 1 Default: 1 SRU start Record (first record is 1) |
| maximumRecords | integer >= 0 Default: 10 SRU maximum records |
| version | string SRU version |
| operation | string SRU operation, such as searchRetrieve |
| recordSchema | string SRU record schema |
| X-Okapi-Tenant | string Okapi Tenant |
| X-Okapi-Token | string Okapi Token |
| X-Okapi-Url | string Okapi URL |