OpenAPI extensions for SDKs

The generator reads two extensions on an operation, both ours. Other vendors' x- keys aren't read.

x-latitude10-sdk

x-latitude10-sdk names and groups an operation's method:

paths:
  /orders:
    get:
      operationId: listOrders
      x-latitude10-sdk:
        name: list
        group: orders

Field	What it does
`name`	The method's name, in place of the operationId.
`group`	The resource the method goes in, in place of the operation's first tag.
`exclude`	`true` leaves the operation out of the SDK.

Without it, a method is named from the operationId, or else from its method and path, and grouped by its first tag.

x-latitude10-pagination

x-latitude10-pagination declares how an operation pages, so its method can walk every page:

x-latitude10-pagination:
  type: cursor
  cursorParam: cursor
  nextCursor: $.next_cursor
  items: $.data

`type`	Also needs
`cursor`	`cursorParam`, a query parameter, and `nextCursor`, a path in the response.
`offset`	`offsetParam` and `limitParam`, two different query parameters.
`page`	`pageParam`, a query parameter.

Every type needs items, the path of the list in the response, such as $.data. A declaration that's missing something leaves the operation unpaginated, with a warning in GENERATION.md saying what.

Detected without the extension

Only one common shape is detected, never guessed: a query parameter named cursor, after, starting_after or page_token, and a response object with exactly one array property and either a next_cursor or next_page_token field, or a has_more field with items that have an id, the last of which is the next cursor.

Where this comes from

app/sdk/_lib/model.ts
app/sdk/_lib/names.ts
tests/fixtures/sdk/