Bug 312761 It makes no difference changing the series labels position in Radar chart.[13]
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/util/LiteralHelper.java
return null;
		}
		else if ( dataType == DataType.DATE_TIME_LITERAL ||
				dataType == DataType.TEXT_LITERAL )
		{
			return new NameSet( prefix,
					suffix,
					toStringNameArray( GroupingUnitType.getGroupingUnits( dataType ) ) );
		}
		return null;
	}
	
	private static NameSet getTriggerConditionSet( )
	{
		String prefix = "TriggerCondition."; 
		String suffix = ".displayName"; 
		return new NameSet( prefix, suffix, new String[]{
				TriggerCondition.ONCLICK_LITERAL.getName( ),
				TriggerCondition.ONDBLCLICK_LITERAL.getName( ),
				TriggerCondition.ONMOUSEDOWN_LITERAL.getName( ),
				TriggerCondition.ONMOUSEUP_LITERAL.getName( ),
				TriggerCondition.ONMOUSEOVER_LITERAL.getName( ),
				TriggerCondition.ONMOUSEMOVE_LITERAL.getName( ),
				TriggerCondition.ONMOUSEOUT_LITERAL.getName( ),
				TriggerCondition.ONFOCUS_LITERAL.getName( ),
				TriggerCondition.ONBLUR_LITERAL.getName( ),
				TriggerCondition.ONKEYDOWN_LITERAL.getName( ),
				TriggerCondition.ONKEYPRESS_LITERAL.getName( ),
				TriggerCondition.ONKEYUP_LITERAL.getName( ),
				TriggerCondition.ONLOAD_LITERAL.getName( ),