def __init__(self, jsondict=None):
        
        self.reason = None
        """ Why immunization occurred.
        List of `CodeableConcept` items (represented as `dict` in JSON). """
        
        self.reasonNotGiven = None
        """ Why immunization did not occur.
        List of `CodeableConcept` items (represented as `dict` in JSON). """
        
        super(ImmunizationExplanation, self).__init__(jsondict)
Initialize all valid properties.
dataset/ETHPy150Open smart-on-fhir/client-py/fhirclient/models/immunization.py/ImmunizationExplanation.__init__