You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: vst3.rs
    path of file: ./repos/nih-plug/src/wrapper
    
    the code of the file until where you have to start completion: #[macro_use]
mod util;

mod context;
mod factory;
mod inner;
mod note_expressions;
mod param_units;
pub mod subcategories;
mod view;
mod wrapper;

/// Re-export for the wrapper.
pub use factory::PluginInfo;
pub use vst3_sys
    
                unsafe fn get_class_info(&self, index: i32, info: *mut PClassInfo) -> tresult {
                    if index < 0 || index >= self.plugin_infos.len() as i32 {
                        return kInvalidArgument;
                    }

                    *info = self.plugin_infos[index as usize].create_class_info();

                    kResultOk
                }