public function setPolicyDelta($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Iam\V1\PolicyDelta::class);
        $this->policy_delta = $var;

        return $this;
    }
public function setPolicyDelta($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Iam\V1\PolicyDelta::class);
        $this->policy_delta = $var;

        return $this;
    }
public function setPolicyDelta ( $ var ) { GPBUtil :: checkMessage ( $ var , \ Google \ Cloud \ Iam \ V1 \ PolicyDelta :: class ) ; $ this -> policy_delta = $ var ; return $ this ; }
Policy delta between the original policy and the newly set policy.

Generated from protobuf field <code>.google.iam.v1.PolicyDelta policy_delta = 2;</code>
@param \Google\Cloud\Iam\V1\PolicyDelta $var
@return $this
Policy delta between the original policy and the newly set policy .