protected function getComparisonField($parameters)
    {
        $comparisonField = isset($parameters[0]) ? $parameters[0] : null;

        if (empty($comparisonField)) {
            throw new ComparisonFieldIsRequiredException('Comparison field is missing');
        }

        return $comparisonField;
    }
protected function getComparisonField($parameters)
    {
        $comparisonField = isset($parameters[0]) ? $parameters[0] : null;

        if (empty($comparisonField)) {
            throw new ComparisonFieldIsRequiredException('Comparison field is missing');
        }

        return $comparisonField;
    }
protected function getComparisonField ( $ parameters ) { $ comparisonField = isset ( $ parameters [ 0 ] ) ? $ parameters [ 0 ] : null ; if ( empty ( $ comparisonField ) ) { throw new ComparisonFieldIsRequiredException ( 'Comparison field is missing' ) ; } return $ comparisonField ; }
Get Comparison Field

@param $parameters
@return null
@throws ComparisonFieldIsRequiredException
Get Comparison Field