code: def experiments_fmri_upsert_property(self, experiment_id, properties):
          
          # Get experiment fMRI to ensure that it exists. Needed to get fMRI
          # data object identifier for given experiment identifier
          fmri = self.experiments_fmri_get(experiment_id)
          if fmri is None:
              return None
          # Update properties for fMRI object using the object identifier
          return self.funcdata.upsert_object_property(fmri.identifier, properties)
docs: Upsert property of fMRI data object associated with given experiment.
  
          Raises ValueError if given property dictionary results in an illegal
          operation.
  
          Parameters
          ----------
          experiment_id : string
              Unique experiment identifier
          properties : Dictionary()
              Dictionary of property names and their new values.
  
          Returns
          -------
          FMRIDataHandle
              Handle for updated object of None if object doesn't exist