This type is a alias for struct tm. It is intended to be a standard way to reference it in .eo files.
Since 1.18
struct @extern Efl.Time { tm_sec: int; tm_min: int; tm_hour: int; tm_mday: int; tm_mon: int; tm_year: int; tm_wday: int; tm_yday: int; tm_isdst: int; }
typedef struct _Efl_Time { int tm_sec; int tm_min; int tm_hour; int tm_mday; int tm_mon; int tm_year; int tm_wday; int tm_yday; int tm_isdst; } Efl_Time;