I have added general_details.yang module in the path “/usr/share/yumapro/modules/netconfcentral/”. Now I executed ‘make_sil_dir_pro –split general_details’ command then it generated “u_” user files and “y_” YumaPro files. When I open the “u_general_details.c” file some function are already present. Every function have case condition, what that case means and if i want to add my code where i have to add ?