The array of translated documents. It is
expected to be size 1 for now. We may produce
multiple translated documents in the future for
other type of file formats.
The translated document's mime type.
The detected language for the input document.
If the user did not provide the source language
for the input document, this field will have the
language code automatically detected. If the
source language was passed, auto-detection of
the language does not occur and this field is