Dynamodb Openapi Projection Structure

{
  "$schema": "https://json-structure.org/meta/core/v0/#",
  "$id": "https://raw.githubusercontent.com/api-evangelist/amazon-dynamodb/refs/heads/main/json-structure/dynamodb-openapi-projection-structure.json",
  "name": "Projection",
  "description": "Represents attributes that are copied from the table into an index",
  "type": "object",
  "properties": {
    "ProjectionType": {
      "type": "string",
      "description": "The set of attributes that are projected into the index",
      "enum": [
        "ALL",
        "KEYS_ONLY",
        "INCLUDE"
      ]
    },
    "NonKeyAttributes": {
      "type": "array",
      "description": "The non-key projected attributes",
      "items": {
        "type": "string"
      },
      "maxItems": 20
    }
  }
}