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           Select discretizations for physics interfaces. The length of the vector is two times the number of physics interfaces. Example value when two physics interfaces g and c are available is: new String[]{"g", "disc1", "c", "disc2"}. 
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           Select meshes for geometries. The length of the vector is two times the number of geometries. Example value when two geometries geom1 and geom2 are available is: new String[]{"geom1","mesh1","geom2", "mesh2"}. 
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