set_back_drill_by_depth# PadstackInstance.set_back_drill_by_depth(drill_depth, diameter, from_bottom, fill_material='')# Set the back drill type by depth. Parameters: drill_depthValueLikeDrilling depth, which may not align with the layer. diameterValueLikeDrilling diameter. from_bottomboolWhether to set the back drill type from the bottom. fill_materialstr, optionalFill material name. The default is "", which means no fill.