function getContents($joinChar = '')
    {
        $contents = array();
        foreach($this->subfields as $subfield) {
            $contents[] = $subfield->getData();
        }
        return implode($joinChar, $contents);
    }
function getContents($joinChar = '')
    {
        $contents = array();
        foreach($this->subfields as $subfield) {
            $contents[] = $subfield->getData();
        }
        return implode($joinChar, $contents);
    }
function getContents ( $ joinChar = '' ) { $ contents = array ( ) ; foreach ( $ this -> subfields as $ subfield ) { $ contents [ ] = $ subfield -> getData ( ) ; } return implode ( $ joinChar , $ contents ) ; }
Return fields data content as joined string

Return all the fields data content as a joined string

@param  string $joinChar A string used to join the data conntent.
Default is an empty string

@return string Joined string
Return fields data content as joined string