src/vs/workbench/browser/parts/editor/editorGroupView.ts/EditorGroupView/moveEditor
class EditorGroupView:	moveEditor(editor: EditorInput, target: IEditorGroupView, options?: IEditorOptions): void {

		// Move within same group
		if (this === target) {
			this.doMoveEditorInsideGroup(editor, options);
		}

		// Move across groups
		else {
			this.doMoveOrCopyEditorAcrossGroups(editor, target, options, false);
		}
	}