pub unsafe extern "C" fn rocksdb_slicetransform_create(
state: *mut c_void,
destructor: Option<unsafe extern "C" fn(arg1: *mut c_void)>,
transform: Option<unsafe extern "C" fn(arg1: *mut c_void, key: *const c_char, length: usize, dst_length: *mut usize) -> *mut c_char>,
in_domain: Option<unsafe extern "C" fn(arg1: *mut c_void, key: *const c_char, length: usize) -> c_uchar>,
in_range: Option<unsafe extern "C" fn(arg1: *mut c_void, key: *const c_char, length: usize) -> c_uchar>,
name: Option<unsafe extern "C" fn(arg1: *mut c_void) -> *const c_char>
) -> *mut rocksdb_slicetransform_t