pgrx_pg_sys

Function RelationFindReplTupleByIndex

Source 
pub unsafe fn RelationFindReplTupleByIndex(
    arg_rel: Relation,
    arg_idxoid: Oid,
    arg_lockmode: Type,
    arg_searchslot: *mut TupleTableSlot,
    arg_outslot: *mut TupleTableSlot,
) -> bool