RetrievalDocument

A retrieval document record behind ragStore().

Field	Type	Description
`id`	`ID!`
`revision`	`String!`	Opaque revision: 64 lowercase hexadecimal characters. Send it as expectedRevision.
`title`	`String!`
`source`	`String!`
`type`	`String!`
`metadata`	`JSONObject!`
`createdAt`	`DateTime!`
`updatedAt`	`DateTime!`