code: def get_rejection_reasons(self, keyword=None):
          
          keys = ['selected', 'other']
          if keyword is None:
              return sum(map(self.get_rejection_reasons, keys), [])
          if keyword not in keys:
              return []
          rejection_reasons = self.context.getRejectionReasons()
          rejection_reasons = rejection_reasons and rejection_reasons[0] or {}
          if keyword == 'other':
              return rejection_reasons.get(keyword, '') and [rejection_reasons.get(keyword, '')] or []
          return rejection_reasons.get(keyword, [])
docs: Returns a list with the rejection reasons as strings
  
          :param keyword: set of rejection reasons to be retrieved.
          Possible values are:
              - 'selected': Get, amongst the set of predefined reasons, the ones selected
              - 'other': Get the user free-typed reason for rejection
              - None: Get all rejection reasons
          :return: list of rejection reasons as strings or an empty list