src/vs/editor/contrib/suggest/browser/resizable.ts/ResizableHTMLElement/enableSashes
class ResizableHTMLElement:	enableSashes(north: boolean, east: boolean, south: boolean, west: boolean): void {
		this._northSash.state = north ? SashState.Enabled : SashState.Disabled;
		this._eastSash.state = east ? SashState.Enabled : SashState.Disabled;
		this._southSash.state = south ? SashState.Enabled : SashState.Disabled;
		this._westSash.state = west ? SashState.Enabled : SashState.Disabled;
	}