pub unsafe extern "C" fn HPDF_SetEncryptionMode(
pdf: HPDF_Doc,
mode: HPDF_EncryptMode,
key_len: HPDF_UINT,
) -> HPDF_STATUSpub unsafe extern "C" fn HPDF_SetEncryptionMode(
pdf: HPDF_Doc,
mode: HPDF_EncryptMode,
key_len: HPDF_UINT,
) -> HPDF_STATUS