Return the X-position of the begin point of this connector, in
        English Metric Units (as a |Length| object).

def begin_x(self):
        """
        Return the X-position of the begin point of this connector, in
        English Metric Units (as a |Length| object).
        """
        cxnSp = self._element
        x, cx, flipH = cxnSp.x, cxnSp.cx, cxnSp.flipH
        begin_x = x+cx if flipH else x
        return Emu(begin_x)