refactor(GatherInterface): do not print call graphs
refactor(GatherInterface): do not print call graphs

SRI-CSL/OCCAM,SRI-CSL/OCCAM,ashish-gehani/OCCAM,ashish-gehani/OCCAM,ashish-gehani/OCCAM,ashish-gehani/OCCAM,SRI-CSL/OCCAM,SRI-CSL/OCCAM,SRI-CSL/OCCAM