extern (C) __gshared nothrow 
struct fts5_api  {
int function(fts5_api* pApi, const char* zName, void* pContext, fts5_tokenizer* pTokenizer, void function(void*) xDestroy) xCreateTokenizer;
 int function(fts5_api* pApi, const char* zName, void** ppContext, fts5_tokenizer* pTokenizer) xFindTokenizer;
 int function(fts5_api* pApi, const char* zName, void* pContext, fts5_extension_function xFunction, void function(void*) xDestroy) xCreateFunction;
 }
Interfaces to extend FTS5.