docs: def get_transactions(self, **kwargs):
          """
          This method optionally takes the following extra
          keyword arguments:
          to_date: a datetime object representing the date the filter should end with
          from_date: a datetime object representing the date the filter should start from
          txn_ref: the transaction reference of a particular transaction
          from_account_id: the account id for the account to filter transactions by (you will
          need to get this information from `get_account_details` method)
          If you specify txn_ref, then it's not necessary to specify to_date and from_date.
          """
          kw_map = {
              'to_date': 'query(period).end',
              'from_account_id': 'query(member)',
              'from_date': 'query(period).begin',
              'txn_ref': 'query(transactionNumber)'}
  
          if not self.TRANSACTIONS_FORM:
              try:
                  self.get_url(self.TRANSACTIONS_URL)
              except AuthRequiredException:
                  self._auth()
                  self.get_url(self.TRANSACTIONS_URL)
              self.br.select_form("accountHistoryForm")
              self.br.form.method = 'POST'
              self.br.form.action = self.TRANSACTIONS_EXPORT_URL
              self.TRANSACTIONS_FORM = self.br.form
              _form = deepcopy(self.TRANSACTIONS_FORM)
          else:
              _form = deepcopy(self.TRANSACTIONS_FORM)
  
          # make all hidden and readonly fields writable
          _form.set_all_readonly(False)
  
          for key, field_name in kw_map.items():
              if key in kwargs:
                  # if the field is a date, format accordingly
                  if key.endswith('_date'):
                      _form[field_name] = kwargs.get(key).strftime('%d/%m/%Y')
                  else:
                      _form[field_name] = kwargs.get(key)
  
          try:
              r = self.post_url(self.TRANSACTIONS_EXPORT_URL, form=_form)
              return self._parse_transactions(r)
          except AuthRequiredException:
              self._auth()
              r = self.post_url(self.TRANSACTIONS_EXPORT_URL, form=_form)
              return self._parse_transactions(r)