code: protected IStyleAppendable appendRegion(IStyleAppendable it, String name, String start, String end, String... contains) {
  		return appendRegion(it, true, name, start, end, contains);
  	}
docs: Append a Vim region.
  
  @param it the receiver of the generated elements.
  @param name the name of the pattern.
  @param start the start pattern.
  @param end the end pattern.
  @param contains the contained elements.
  @return {@code it}.