Returns the phase configuration at the specified non-wetting phase (invading phase) saturation.
Snwp (scalar, between 0 and 1) – The network saturation for which the phase configuration is desired.
Two dictionary containing arrays that describe the pore and throat
distribution at the given saturation. Specifically, these are
**’pore.occupancy’** (1 indicates the pores is invaded and 0)
**’throat.occupancy’** (Same as described above but for throats.)