'Generates an `~astropy.coordinates.ITRS` object with the location of
this object at the requested ``obstime``.
Parameters
obstime : `~astropy.time.Time` or None
The ``obstime`` to apply to the new `~astropy.coordinates.ITRS`, or
if None, the default ``obstime`` will be used.
Returns
itrs : `~astropy.coordinates.ITRS`
The new object in the ITRS frame'

def get_itrs(self, obstime=None):

    if (obstime and (self.size == 1) and (obstime.size > 1)):
        self = broadcast_to(self, obstime.shape, subok=True)
    from .builtin_frames import ITRS
    return ITRS(x=self.x, y=self.y, z=self.z, obstime=obstime)
