pub unsafe extern "C" fn mdbx_cursor_scan_from(
cursor: *mut MDBX_cursor,
predicate: MDBX_predicate_func,
context: *mut c_void,
from_op: MDBX_cursor_op,
from_key: *mut MDBX_val,
from_value: *mut MDBX_val,
turn_op: MDBX_cursor_op,
arg: *mut c_void,
) -> c_int