Function htmlDocContentDumpFormatOutput 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn htmlDocContentDumpFormatOutput(
    buf: *mut _xmlOutputBuffer,
    cur: *mut _xmlDoc,
    _encoding: *const c_char,
    format: c_int,
)

Serialize an HTML document to an output buffer with format.

UPSTREAM-PARITY

void htmlDocContentDumpFormatOutput(xmlOutputBuffer *buf, xmlDoc *cur,
                                    const char *encoding, int format);