Leaves a named block. There should always be a matching invocation of
     * {@link #enter(String)} when entering the block. Calls to this method will
     * be removed by the compiler unless profiling is enabled.
Leaves a named block. There should always be a matching invocation of
     * {@link #enter(String)} when entering the block. Calls to this method will
     * be removed by the compiler unless profiling is enabled. | Profiler.java