excerpt from graphql compiled schema for Message and User/Viewer model

schema.json

[
  {
    "kind": "OBJECT",
    "name": "Message",
    "description": null,
    "fields": [
      {
        "name": "id",
        "description": "The ID of the object.",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "ID", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "thread",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": {
            "kind": "OBJECT",
            "name": "MessageThread",
            "ofType": null
          }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "createdOn",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": {
            "kind": "SCALAR",
            "name": "DateTime",
            "ofType": null
          }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "body",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "String", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "messageType",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "String", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "author",
        "description": "",
        "args": [],
        "type": { "kind": "OBJECT", "name": "Viewer", "ofType": null },
        "isDeprecated": false,
        "deprecationReason": null
      }
    ],
    "inputFields": null,
    "interfaces": [{ "kind": "INTERFACE", "name": "Node", "ofType": null }],
    "enumValues": null,
    "possibleTypes": null
  },

  {
    "kind": "OBJECT",
    "name": "Viewer",
    "description": null,
    "fields": [
      {
        "name": "id",
        "description": "The ID of the object.",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "ID", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "lastLogin",
        "description": "",
        "args": [],
        "type": { "kind": "SCALAR", "name": "DateTime", "ofType": null },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "isSuperuser",
        "description":
          "Designates that this user has all permissions without explicitly assigning them.",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": {
            "kind": "SCALAR",
            "name": "Boolean",
            "ofType": null
          }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "username",
        "description":
          "Required. 30 characters or fewer. Letters, digits and @/./+/-/_ only.",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "String", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "firstName",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "String", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "lastName",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "String", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "email",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": { "kind": "SCALAR", "name": "String", "ofType": null }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "isStaff",
        "description":
          "Designates whether the user can log into this admin site.",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": {
            "kind": "SCALAR",
            "name": "Boolean",
            "ofType": null
          }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "isActive",
        "description":
          "Designates whether this user should be treated as active. Unselect this instead of deleting accounts.",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": {
            "kind": "SCALAR",
            "name": "Boolean",
            "ofType": null
          }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "dateJoined",
        "description": "",
        "args": [],
        "type": {
          "kind": "NON_NULL",
          "name": null,
          "ofType": {
            "kind": "SCALAR",
            "name": "DateTime",
            "ofType": null
          }
        },
        "isDeprecated": false,
        "deprecationReason": null
      },
      {
        "name": "messages",
        "description": "Query all messages by thread key",
        "args": [
          {
            "name": "threadKey",
            "description": null,
            "type": {
              "kind": "SCALAR",
              "name": "String",
              "ofType": null
            },
            "defaultValue": null
          },
          {
            "name": "before",
            "description": null,
            "type": {
              "kind": "SCALAR",
              "name": "String",
              "ofType": null
            },
            "defaultValue": null
          },
          {
            "name": "after",
            "description": null,
            "type": {
              "kind": "SCALAR",
              "name": "String",
              "ofType": null
            },
            "defaultValue": null
          },
          {
            "name": "first",
            "description": null,
            "type": { "kind": "SCALAR", "name": "Int", "ofType": null },
            "defaultValue": null
          },
          {
            "name": "last",
            "description": null,
            "type": { "kind": "SCALAR", "name": "Int", "ofType": null },
            "defaultValue": null
          }
        ],
        "type": {
          "kind": "OBJECT",
          "name": "MessageConnection",
          "ofType": null
        },
        "isDeprecated": false,
        "deprecationReason": null
      }
    ],
    "inputFields": null,
    "interfaces": [{ "kind": "INTERFACE", "name": "Node", "ofType": null }],
    "enumValues": null,
    "possibleTypes": null
  }
]