def _reprJSON(self):
        """Returns a JSON serializable represenation of a ``Ci`` class instance.
        Use :func:`maspy.core.Ci._fromJSON()` to generate a new ``Ci`` instance
        from the return value.

        :returns: a JSON serializable python object
        """
        return {'__Ci__': (self.id, self.specfile, self.dataProcessingRef,
                           self.precursor, self.product, self.params,
                           self.attrib, self.arrayInfo
                           )
                }