src/vs/workbench/contrib/callHierarchy/browser/callHierarchyPeek.ts/CallHierarchyTreePeekWidget/_show
class CallHierarchyTreePeekWidget:	private _show() {
		if (!this._isShowing) {
			this.editor.revealLineInCenterIfOutsideViewport(this._where.lineNumber, ScrollType.Smooth);
			super.show(Range.fromPositions(this._where), this._layoutInfo.height);
		}
	}