code: public final Object get(String key) {
  		try {
  			this.mutex.acquire();
  
  			return this.valueMap.get(key);
  		} finally {
  			try {
  				this.mutex.release();
  			} catch (Exception ignore) {
  			}
  		}
  	}
docs: Get the value with the given key from this context
  
  @param key
  the key to lookup
  
  @return the value with the given key from this context