docs: def load_fileobj(fileobj, gz = None, xmldoc = None, contenthandler = None):
  	"""
  	Parse the contents of the file object fileobj, and return the
  	contents as a LIGO Light Weight document tree.  The file object
  	does not need to be seekable.
  
  	If the gz parameter is None (the default) then gzip compressed data
  	will be automatically detected and decompressed, otherwise
  	decompression can be forced on or off by setting gz to True or
  	False respectively.
  
  	If the optional xmldoc argument is provided and not None, the
  	parsed XML tree will be appended to that document, otherwise a new
  	document will be created.  The return value is a tuple, the first
  	element of the tuple is the XML document and the second is a string
  	containing the MD5 digest in hex digits of the bytestream that was
  	parsed.
  
  	Example:
  
  	>>> from pycbc_glue.ligolw import ligolw
  	>>> import StringIO
  	>>> f = StringIO.StringIO('<?xml version="1.0" encoding="utf-8" ?><!DOCTYPE LIGO_LW SYSTEM "http://ldas-sw.ligo.caltech.edu/doc/ligolwAPI/html/ligolw_dtd.txt"><LIGO_LW><Table Name="demo:table"><Column Name="name" Type="lstring"/><Column Name="value" Type="real8"/><Stream Name="demo:table" Type="Local" Delimiter=",">"mass",0.5,"velocity",34</Stream></Table></LIGO_LW>')
  	>>> xmldoc, digest = load_fileobj(f, contenthandler = ligolw.LIGOLWContentHandler)
  	>>> digest
  	'6bdcc4726b892aad913531684024ed8e'
  
  	The contenthandler argument specifies the SAX content handler to
  	use when parsing the document.  The contenthandler is a required
  	argument.  See the pycbc_glue.ligolw package documentation for typical
  	parsing scenario involving a custom content handler.  See
  	pycbc_glue.ligolw.ligolw.PartialLIGOLWContentHandler and
  	pycbc_glue.ligolw.ligolw.FilteringLIGOLWContentHandler for examples of
  	custom content handlers used to load subsets of documents into
  	memory.
  	"""
  	fileobj = MD5File(fileobj)
  	md5obj = fileobj.md5obj
  	if gz or gz is None:
  		fileobj = RewindableInputFile(fileobj)
  		magic = fileobj.read(2)
  		fileobj.seek(0, os.SEEK_SET)
  		if gz or magic == '\037\213':
  			fileobj = gzip.GzipFile(mode = "rb", fileobj = fileobj)
  	if xmldoc is None:
  		xmldoc = ligolw.Document()
  	ligolw.make_parser(contenthandler(xmldoc)).parse(fileobj)
  	return xmldoc, md5obj.hexdigest()