code: public Object getConfigParameter(final ConfigurationKeys configParameter)
  	{
  		if (this.parameterMap.containsKey(configParameter)) {
  			return this.parameterMap.get(configParameter);
  		}
  
  		return null;
  	}
docs: Returns the value related to the configuration key or null if the key is
  not contained.
  
  @param configParameter
  configuration key
  @return value or null