src/main/java/com/github/mjeanroy/springmvc/view/mustache/MustacheViewResolver.java
public void addLayoutMapping(String viewName, String layoutName) {
		log.debug("Add new layout mapping");
		log.trace("  => {} -> {}", viewName, layoutName);

		notNull(viewName, "View name must not be null");
		notNull(layoutName, "Layout name must not be null");
		this.layoutMappings.put(viewName, layoutName);
	}
public void addLayoutMapping(String viewName, String layoutName) {
		log.debug("Add new layout mapping");
		log.trace("  => {} -> {}", viewName, layoutName);

		notNull(viewName, "View name must not be null");
		notNull(layoutName, "Layout name must not be null");
		this.layoutMappings.put(viewName, layoutName);
	}
Replace current layout mappings by new mappings.

@param viewName View name to map.
@param layoutName Layout name to use for given view.