code: public final void set(String key, Object value) {
  		try {
  			this.mutex.acquire();
  			if (value == null) {
  				this.valueMap.remove(key);
  			} else {
  				this.valueMap.put(key, value);
  			}
  		} finally {
  			try {
  				this.mutex.release();
  			} catch (Exception ignore) {
  			}
  		}
  	}
docs: Set a value in this context
  
  @param key
  the key to save the value on
  @param value
  the value to set