Spanner/src/V1/PlanNode.php
public function setChildLinks($var)
    {
        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Cloud\Spanner\V1\PlanNode\ChildLink::class);
        $this->child_links = $arr;

        return $this;
    }
public function setChildLinks($var)
    {
        $arr = GPBUtil::checkRepeatedField($var, \Google\Protobuf\Internal\GPBType::MESSAGE, \Google\Cloud\Spanner\V1\PlanNode\ChildLink::class);
        $this->child_links = $arr;

        return $this;
    }
public function setChildLinks ( $ var ) { $ arr = GPBUtil :: checkRepeatedField ( $ var , \ Google \ Protobuf \ Internal \ GPBType :: MESSAGE , \ Google \ Cloud \ Spanner \ V1 \ PlanNode \ ChildLink :: class ) ; $ this -> child_links = $ arr ; return $ this ; }
List of child node `index`es and their relationship to this parent.

Generated from protobuf field <code>repeated .google.spanner.v1.PlanNode.ChildLink child_links = 4;</code>
@param \Google\Cloud\Spanner\V1\PlanNode\ChildLink[]|\Google\Protobuf\Internal\RepeatedField $var
@return $this
List of child node index es and their relationship to this parent .