open fun setAllowedLocations(@Nullable vararg locations: Resource): Unit
By default when a Resource is found, the path of the resolved resource is compared to ensure it's under the input location where it was found. However sometimes that may not be the case, e.g. when CssLinkResourceTransformer resolves public URLs of links it contains, the CSS file is the location and the resources being resolved are css files, images, fonts and others located in adjacent or parent directories.
This property allows configuring a complete list of locations under which resources must be so that if a resource is not under the location relative to which it was found, this list may be checked as well.
By default ResourceWebHandler initializes this property to match its list of locations.