Firestore/src/V1/StructuredQuery.php
public function setStartAt($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Firestore\V1\Cursor::class);
        $this->start_at = $var;

        return $this;
    }
public function setStartAt($var)
    {
        GPBUtil::checkMessage($var, \Google\Cloud\Firestore\V1\Cursor::class);
        $this->start_at = $var;

        return $this;
    }
public function setStartAt ( $ var ) { GPBUtil :: checkMessage ( $ var , \ Google \ Cloud \ Firestore \ V1 \ Cursor :: class ) ; $ this -> start_at = $ var ; return $ this ; }
A starting point for the query results.

Generated from protobuf field <code>.google.firestore.v1.Cursor start_at = 7;</code>
@param \Google\Cloud\Firestore\V1\Cursor $var
@return $this
A starting point for the query results .