Function yrs::yxmlelem_prev_sibling

#[no_mangle]
pub unsafe extern "C" fn yxmlelem_prev_sibling(
    xml: *const XmlElement, 
    txn: *const Transaction
) -> *mut YOutput

Returns a previous sibling of a current YXmlElement, which can be either another YXmlElement or a YXmlText.

If current YXmlElement is the first child, this function returns a null pointer. A returned value should be eventually released using youtput_destroy function.