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: mod.rs
    path of file: ./repos/windows-rs/crates/libs/windows/src/Windows/Graphics/DirectX/Direct3D11
    
    the code of the file until where you have to start completion: windows_core::imp::define_interface!(IDirect3DDevice, IDirect3DDevice_Vtbl, 0xa37624ab_8d5f_4650_9d3e_9eae3d9
    
    pub fn Description(&self) -> windows_core::Result<Direct3DSurfaceDescription> {
        let this = self;
        unsafe {
            let mut result__ = std::mem::zeroed();
            (windows_core::Interface::vtable(this).Description)(windows_core::Interface::as_raw(this), &mut result__).map(|| result__)
        }
    }