Firestore/src/V1/ListenResponse.php
public function setTargetChange($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Firestore\V1\TargetChange::class);
        $this->writeOneof(2, $var);

        return $this;
    }
public function setTargetChange($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Firestore\V1\TargetChange::class);
        $this->writeOneof(2, $var);

        return $this;
    }
public function setTargetChange ( $ var ) { GPBUtil :: checkMessage ( $ var , \ Google \ Cloud \ Firestore \ V1 \ TargetChange :: class ) ; $ this -> writeOneof ( 2 , $ var ) ; return $ this ; }
Targets have changed.

Generated from protobuf field <code>.google.firestore.v1.TargetChange target_change = 2;</code>
@param \Google\Cloud\Firestore\V1\TargetChange $var
@return $this
Targets have changed .