how to use it in an irregular domain

[WeCcRy]

I want to know that how to use it in a irregular domain and could you provide an example. By the way,could you explain more about the following code. I can't figure out that how it work and what kind of input should i provide(like use it to a complex boundary condition). Thanks.
# boundary loss x_batch_boundary = jnp.array([0.]).reshape((1,1)) u_boundary = jnp.array([1.]).reshape((1,1)) ut_boundary = jnp.array([0.]).reshape((1,1)) required_ujs_boundary = ( (0,()), (0,(0,)), )