:param opts: a dictionary containing any of the following Proc Import options(datarow, delimiter, getnames, guessingrows):

            - datarow      is a number
            - delimiter    is a character
            - getnames     is a boolean
            - guessingrows is a numbers or the string 'MAX'

            .. code-block:: python

                             {'datarow'     : 2
                              'delimiter'   : ',''
                              'getnames'    : True
                              'guessingrows': 20
                             }
        :return: str

def _impopts(self, opts):
        """
        :param opts: a dictionary containing any of the following Proc Import options(datarow, delimiter, getnames, guessingrows):

            - datarow      is a number
            - delimiter    is a character
            - getnames     is a boolean
            - guessingrows is a numbers or the string 'MAX'

            .. code-block:: python

                             {'datarow'     : 2
                              'delimiter'   : ',''
                              'getnames'    : True
                              'guessingrows': 20
                             }
        :return: str
        """
        optstr = ''

        if len(opts):
            for key in opts:
                if len(str(opts[key])):
                    if key == 'datarow':
                        optstr += 'datarow=' + str(opts[key]) + ';'
                    elif key == 'delimiter':
                        optstr += 'delimiter='
                        optstr += "'" + '%02x' % ord(opts[key].encode(self._io.sascfg.encoding)) + "'x; "
                    elif key == 'getnames':
                        optstr += 'getnames='
                        if opts[key]:
                            optstr += 'YES; '
                        else:
                            optstr += 'NO; '
                    elif key == 'guessingrows':
                        optstr += 'guessingrows='
                        if opts[key] == 'MAX':
                            optstr += 'MAX; '
                        else:
                            optstr += str(opts[key]) + '; '
        return optstr