Function xmlTextWriterWriteDTDEntity 

pub unsafe extern "C" fn xmlTextWriterWriteDTDEntity(
    writer: xmlTextWriterPtr,
    pe: c_int,
    name: *const xmlChar,
    pubid: *const xmlChar,
    sysid: *const xmlChar,
    ndataid: *const xmlChar,
    content: *const xmlChar,
) -> c_int