Function libxml::bindings::xmlTextWriterWriteVFormatAttributeNS

pub unsafe extern "C" fn xmlTextWriterWriteVFormatAttributeNS(
    writer: xmlTextWriterPtr, 
    prefix: *const xmlChar, 
    name: *const xmlChar, 
    namespaceURI: *const xmlChar, 
    format: *const c_char, 
    argptr: *mut __va_list_tag
) -> c_int