| Syntax
       typedef MH_ERROR 
       MessageHandlerMakeCode(
           void *userData, SablotHandle processor_,
           int severity, unsigned short facility, unsigned short code);
       typedef MH_ERROR 
       MessageHandlerLog(
           void *userData, SablotHandle processor_,
           MH_ERROR code, MH_LEVEL level, char **fields);
       typedef MH_ERROR 
       MessageHandlerError(void *userData, SablotHandle processor_,
           MH_ERROR code, MH_LEVEL level, char **fields);
       typedef struct
       {
           MessageHandlerMakeCode *makeCode;
           MessageHandlerLog *log;
           MessageHandlerError *error;
       } MessageHandler;
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