AppendToTemplate string.

Hessian2PatchByReplace args is the arguments from command, subDirPath used for xx/xx/xx.

Hessian2PreHook Hook before building cmd.

Run is an entry of the plugin mode of kitex for thriftgo.

PluginName is the link name when the kitex binary is used as a plugin for thriftgo.

TODO: check required.

StructLikeDeepEqualEmpty when using slim template, there's no need to generate deep equal for xxArgs and xxResult struct, to avoid the template compile error, use this empty definition instead.

TheUseOptionMessage indicates that the generating of kitex_gen is aborted due to the -use option.