public static String resolvePath(final OperationContext context, final String relativeToPath, final String path) {
        return INSTANCE.resolve(context, relativeToPath, path);
    }
public static String resolvePath ( final OperationContext context , final String relativeToPath , final String path ) { return INSTANCE . resolve ( context , relativeToPath , path ) ; }
Resolves the path based on the relative to and the path. May return {@code null} if the service is not up.

@param context        the operation context.
@param relativeToPath the relative to path, may be {@code null}.
@param path           the path to append to the relative to path or the absolute path if the relative to path is
{@code null}.

@return the full path or {@code null} if the services were not started.