code: final static Object getDefaultPropertyValue(String propName) {
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.entry(tc, "getDefaultPropertyValue", propName);
  
      Object defaultValue = null;
  
      PropertyEntry prop = propertyMap.get(propName);
      if (prop != null) {
        defaultValue = prop.getDefaultValue();
      }
  
      if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled()) SibTr.exit(tc, "getDefaultPropertyValue", defaultValue);
      return defaultValue;
    }
docs: getDefaultPropertyValue
  This method returns the default value for the supplied property name. It
  is used by the JmsDestinationImpl constructor to set up default values where
  appropriate, and by the encoding process to check (using .equals) when a
  property is currently set to its default value.
  
  Note: The properties supported are only those included in the PropertyMap.
  It will always return null for any other properties, such as
  DEST_NAME, DEST_DESCRIM, forwardRP and reverseRP.
  
  @param propName       The name of the property for which the default value is wanted
  
  @return Object        The default value for the given property.