[Kwant] complex conjugate operator

Dear developer of Kwant： I'm a freshman of Kwant. Recently, I want to calculate the conductance of Superconductor junction. Let me take the p+ip topological superconductor as the example. Its Hamiltonian is like with \sigma, \tau is the Pauli matrix for spin and particle-hole. It have particle-hole symmetry: to guarantee . ************************** My question is how to write down the K (complex conjugate) operator? Jinlong Zhang