Function xmlSaveTree 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xmlSaveTree(
    ctxt: *mut _xmlSaveCtxt,
    node: *mut _xmlNode,
) -> c_long

Serialize a node tree into the save context’s output buffer.

Returns the number of bytes written, or -1 on error.

SAFETY

• ctxt must be a valid save context.
• node must be a valid node or NULL.