Trace/src/V2/Span/TimeEvent/Annotation.php
public function setDescription($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Trace\V2\TruncatableString::class);
        $this->description = $var;

        return $this;
    }
public function setDescription($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Trace\V2\TruncatableString::class);
        $this->description = $var;

        return $this;
    }
public function setDescription ( $ var ) { GPBUtil :: checkMessage ( $ var , \ Google \ Cloud \ Trace \ V2 \ TruncatableString :: class ) ; $ this -> description = $ var ; return $ this ; }
A user-supplied message describing the event. The maximum length for
the description is 256 bytes.

Generated from protobuf field <code>.google.devtools.cloudtrace.v2.TruncatableString description = 1;</code>
@param \Google\Cloud\Trace\V2\TruncatableString $var
@return $this
A user - supplied message describing the event . The maximum length for the description is 256 bytes .