code: def get_by(self, field, value):
          
          firmwares = self.get_all()
          matches = []
          for item in firmwares:
              if item.get(field) == value:
                  matches.append(item)
          return matches
docs: Gets the list of firmware baseline resources managed by the appliance. Optional parameters can be used to
          filter the list of resources returned.
  
          The search is case-insensitive.
  
          Args:
              field: Field name to filter.
              value: Value to filter.
  
          Returns:
              list: List of firmware baseline resources.