Function btck_chainstate_manager_options_create 

pub unsafe extern "C" fn btck_chainstate_manager_options_create(
    context: *const btck_Context,
    data_directory: *const c_char,
    data_directory_len: usize,
    blocks_directory: *const c_char,
    blocks_directory_len: usize,
) -> *mut btck_ChainstateManagerOptions