'Returns the kernel path for an entry based on its title
:type title: string
:param title: the title of the entry
:return: the kernel path of None'

def _kernel_for_title(self, title):

    index = self._index_for_title(title)
    if (index is not None):
        info = self.get_info_lines(index)
        kernel = self._info_filter(info, 'kernel')
        return kernel
    else:
        return None
