CReport::initializeAlternateColumnPhrases

static function initializeAlternateColumnPhrases($helperClass)
{
	if (static::$alternateColumnPhrases === null)
	{
		static::$alternateColumnPhrases = [];
		
		if (is_string($helperClass)
			&& $helperClass !== ''
			&& method_exists($helperClass, 'getAlternatePhrasesOfColumns'))
		{
			$phrases = call_user_func([$helperClass, 'getAlternatePhrasesOfColumns']);
			if (is_array($phrases))
			{
				static::$alternateColumnPhrases[$helperClass] = $phrases;
			}
			else
			{
				static::$alternateColumnPhrases[$helperClass] = [];
			}
		}
	}
}