extend type RootMutation {
  """
  Upload a new file. Requires `basic:write` scope to be accessible
  Creates a temporary unique file Id and returns presigned URLs for uploading a binary file in multiple parts.
  After the upload is completed, this Id can be used (**once only**) to permanently link the file to a specific type (e.g., Asset, Attachment, Revision) via another mutation.

  When `chunkSize` is provided as `null` (to be the future default), the number of upload parts and thus their corresponding part size will be computed dynamically based on the specified file size, following these rules:
  - Maxmum of 1000 parts.
  - For files of 5TB (maximum): 1000 parts of 5GB each.
  - For files less than 15MB: 1 single part of 15MB.
  - Otherwise: an inclusive range of [1, 1000] parts of [15MB, 5GB] each.
  """
  uploadFile(
    """`UploadFile` input argument."""
    input: UploadFileInput!
  ): UploadFile
}