code: def point_stokes(self, context):
          
  
          # Shape (npsrc, ntime, 4)
          (ls, us), (lt, ut), (l, u) = context.array_extents(context.name)
  
          data = np.empty(context.shape, context.dtype)
          data[ls:us,:,l:u] = np.asarray(lm_stokes)[ls:us,None,:]
          return data
docs: Supply point source stokes parameters to montblanc