':param root: The root directory for this corpus.
:param fileids: A list or regexp specifying the fileids in this corpus.
:param comment_char: The character which can appear at the start of
a line to indicate that the rest of the line is a comment.
:param detect_blocks: The method that is used to find blocks
in the corpus; can be \'unindented_paren\' (every unindented
parenthesis starts a new parse) or \'sexpr\' (brackets are
matched).
:param tagset: The name of the tagset used by this corpus, to be used
for normalizing or converting the POS tags returned by the
tagged_...() methods.'

def __init__(self, root, fileids, comment_char=None, detect_blocks='unindented_paren', encoding='utf8', tagset=None):

    CorpusReader.__init__(self, root, fileids, encoding)
    self._comment_char = comment_char
    self._detect_blocks = detect_blocks
    self._tagset = tagset
