@property
    def key(self):
        seg = self.segment if self.segment_num == 1 else self.segment + six.text_type(self.segment_num)
        return ".".join(six.text_type(f) for f in [seg, self.field_num, self.repeat_num, self.component_num, self.subcomponent_num] if f is not None)
Return the string accessor key that represents this instance
dataset/ETHPy150Open johnpaulett/python-hl7/hl7/accessor.py/Accessor.key