Function pgrx_pg_sys::PrepareToInvalidateCacheTuple

pub unsafe fn PrepareToInvalidateCacheTuple(
    arg_relation: Relation,
    arg_tuple: HeapTuple,
    arg_newtuple: HeapTuple,
    arg_function: Option<unsafe extern "C" fn(arg1: c_int, arg2: uint32, arg3: Oid)>
)