pod "CRDynamicLoader"
attribute((used, section("__DATA" "," "kylin"))) static const KLN_DATA __kylin__0 = (KLN_DATA){(KLN_DATA_HEADER){"Key", KLN_STRING, KLN_IS_ARRAY}, "Value"};
http://blog.sunnyxx.com/2014/09/15/objc-attribute-cleanup/
https://everettjf.github.io/2017/03/06/a-method-of-delay-premain-code/