Function xmlHashScan 

#[unsafe(no_mangle)]
pub extern "C" fn xmlHashScan(
    _table: *mut c_void,
    _f: Option<unsafe extern "C" fn(*mut c_void, *const xmlChar, *mut c_void)>,
    _data: *mut c_void,
)

Scan a hash table with a scanner function.

UPSTREAM-PARITY

void xmlHashScan(xmlHashTablePtr table, xmlHashScanner f, void *data);