Accepts a file submission from a browser as a build parameter. The uploaded
    file will be placed at the specified location in the workspace, which your
    build can then access and use.
    This is useful for many situations, such as:
    - Letting people run tests on the artifacts they built.
- Automating the upload/release/deployment process by allowing the user to
    place the file.
- Perform data processing by uploading a dataset.
It is possible to not submit any file. If it's case and if no file is
    already present at the specified location in the workspace, then nothing
    happens. If there's already a file present in the workspace, then this file
    will be kept as-is.