'Return None.  Adds headers and stubs to table,
if these were provided at initialization.
Parameters
headers : list of strings
K strings, where K is number of columns
stubs : list of strings
R strings, where R is number of non-header rows
:note: a header row does not receive a stub!'

def _add_headers_stubs(self, headers, stubs):

    if headers:
        self.insert_header_row(0, headers, dec_below='header_dec_below')
    if stubs:
        self.insert_stubs(0, stubs)
