When a raw document is supplied, this indicates the file
format
Values:
RAW_DOCUMENT_FILE_TYPE_UNSPECIFIED (0):
No raw document specified or it is
non-parsable
RAW_DOCUMENT_FILE_TYPE_PDF (1):
Adobe PDF format
RAW_DOCUMENT_FILE_TYPE_DOCX (2):
Microsoft Word format
RAW_DOCUMENT_FILE_TYPE_XLSX (3):
Microsoft Excel format
RAW_DOCUMENT_FILE_TYPE_PPTX (4):
Microsoft Powerpoint format
RAW_DOCUMENT_FILE_TYPE_TEXT (5):
UTF-8 encoded text format
RAW_DOCUMENT_FILE_TYPE_TIFF (6):
TIFF or TIF image file format
