MobID representation as dict

def to_dict(self):
        """
        MobID representation as dict
        """

        material = {'Data1': self.Data1,
                    'Data2': self.Data2,
                    'Data3': self.Data3,
                    'Data4': list(self.Data4)
                    }

        return {'material':material,
                'length': self.length,
                'instanceHigh': self.instanceHigh,
                'instanceMid': self.instanceMid,
                'instanceLow': self.instanceLow,
                'SMPTELabel': list(self.SMPTELabel)
                }