// uncomment the incompressiblelocalresidual which is a specialization of the standard immisible localresidual for one phase incompressible cases and provides an analytic jacobian.
// create the type tag nodes. Here we define the incompressible type tag as well as the compressible type tag. The incompressible uses a different fluidsystem than the compressible
// set the OneP Incompressible local residual for the OnePIncompressible type tag. This provides an analytic jacobian to be used for the analytic solution. Change that by setting: