Presumably the feature being referred to is the ability to “collapse or expand parts of a document” via a graphic indicator adjacent to a heading as can be done in MS Word 2013. This is not the same thing as collapsing / expanding a heading when in outline view, which both MS Word and LO Writer offer. The former is purely a show/hide function in the text, while the latter is a management facility including promotion/demotion, nesting, moving, etc.
The former feature (a.k.a. “code folding”) is not currently available in Writer. The related enhancement request is fdo#47746. There is also an earlier question that provides a fairly extensive set of comparisons and examples.