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/cacao/src/select
    
    the code of the file until where you have to start completion: //! Implements a Select-style dropdown. By default this uses NSPopupSelect on macOS.

use core_graphics::geometry::CGRect;
use objc::rc::{Id, Shared};
use objc::runtime::{Class, Object};
use objc::{msg_send, msg_send_id, sel};

use crate::control::Control;
use crate::foundation::{id, load_or_register_class, nil, NSInteger, NSString, NO, YES};
use crate::geometry::Rect;
use crate::invoker::TargetActionHandler;
use crate::layout::Layout;
#[cfg(feature = "autolayout")]
use crate::layout::{LayoutAnchorDimension, LayoutAnchorX, LayoutAnchorY};
use crate::objc_access::ObjcAccess;
use crate::utils::properties::ObjcProperty;

/// Wraps `NSPopUpSelect` on AppKit. Not currently implemented for iOS.
///
/// Acts like a `<select>` dropdown, if you're familiar with HTML. Use for dropdown option
/// selecting.
///
/// Some proper
    
    pub fn new() -> Self {
        let zero: CGRect = Rect::zero().into();

        let view: id = unsafe {
            let alloc: id = msg_send![register_class(), alloc];
            let select: id = msg_send![alloc, initWithFrame:zero pullsDown:NO];

            #[cfg(feature = "autolayout")]
            let _: () = msg_send![select, setTranslatesAutoresizingMaskIntoConstraints: NO];

            select
        };

        Select {
            handler: None,

            #[cfg(feature = "autolayout")]
            top: LayoutAnchorY::top(view),

            #[cfg(feature = "autolayout")]
            left: LayoutAnchorX::left(view),

            #[cfg(feature = "autolayout")]
            leading: LayoutAnchorX::leading(view),

            #[cfg(feature = "autolayout")]
            right: LayoutAnchorX::right(view),

            #[cfg(feature = "autolayout")]
            trailing: LayoutAnchorX::trailing(view),

            #[cfg(feature = "autolayout")]
            bottom: LayoutAnchorY::bottom(view),

            #[cfg(feature = "autolayout")]
            width: LayoutAnchorDimension::width(view),

            #[cfg(feature = "autolayout")]
            height: LayoutAnchorDimension::height(view),

            #[cfg(feature = "autolayout")]
            center_x: LayoutAnchorX::center(view),

            #[cfg(feature = "autolayout")]
            center_y: LayoutAnchorY::center(view),

            objc: ObjcProperty::retain(view)
        }
    }