ap_find_loaded_module_symbol  413 modules/mappers/mod_so.c     APR_REGISTER_OPTIONAL_FN(ap_find_loaded_module_symbol);
ap_find_loaded_module_symbol 2081 server/core.c          APR_OPTIONAL_FN_TYPE(ap_find_loaded_module_symbol) *check_symbol =
ap_find_loaded_module_symbol 2082 server/core.c              APR_RETRIEVE_OPTIONAL_FN(ap_find_loaded_module_symbol);