public function setMappingIndicator($mappingIndicator)
    {
        if (empty($mappingIndicator) === false && Format::isString256($mappingIndicator) === true) {
            $this->mappingIndicator = $mappingIndicator;
        } else {
            $msg = "The 'mappingIndicator' argument must be a non-empty string with at most 256 characters, '" . gettype($mappingIndicator) . "' given.";
            throw new InvalidArgumentException($msg);
        }
    }
public function setMappingIndicator($mappingIndicator)
    {
        if (empty($mappingIndicator) === false && Format::isString256($mappingIndicator) === true) {
            $this->mappingIndicator = $mappingIndicator;
        } else {
            $msg = "The 'mappingIndicator' argument must be a non-empty string with at most 256 characters, '" . gettype($mappingIndicator) . "' given.";
            throw new InvalidArgumentException($msg);
        }
    }
public function setMappingIndicator ( $ mappingIndicator ) { if ( empty ( $ mappingIndicator ) === false && Format :: isString256 ( $ mappingIndicator ) === true ) { $ this -> mappingIndicator = $ mappingIndicator ; } else { $ msg = "The 'mappingIndicator' argument must be a non-empty string with at most 256 characters, '" . gettype ( $ mappingIndicator ) . "' given." ; throw new InvalidArgumentException ( $ msg ) ; } }
Set the mapping indicator to use between field name and field value when
displaying variables of record cardinality.

@param string $mappingIndicator A non-empty string with at most 256 characters.
@throws \InvalidArgumentException If $mappingIndicator is not a non-empty string with at most 256 characters.
Set the mapping indicator to use between field name and field value when displaying variables of record cardinality .