src/Message/PartFilter.php
public function filter(MessagePart $part)
    {
        return !($this->failsMultiPartFilter($part)
            || $this->failsTextPartFilter($part)
            || $this->failsSignedPartFilter($part)
            || $this->failsHeaderPartFilter($part));
    }
public function filter(MessagePart $part)
    {
        return !($this->failsMultiPartFilter($part)
            || $this->failsTextPartFilter($part)
            || $this->failsSignedPartFilter($part)
            || $this->failsHeaderPartFilter($part));
    }
public function filter ( MessagePart $ part ) { return ! ( $ this -> failsMultiPartFilter ( $ part ) || $ this -> failsTextPartFilter ( $ part ) || $ this -> failsSignedPartFilter ( $ part ) || $ this -> failsHeaderPartFilter ( $ part ) ) ; }
Determines if the passed MessagePart should be filtered out or not.
If the MessagePart passes all filter tests, true is returned.  Otherwise
false is returned.

@param MessagePart $part
@return boolean
Determines if the passed MessagePart should be filtered out or not . If the MessagePart passes all filter tests true is returned . Otherwise false is returned .