Controlling labels

<?php

require_once "../../../../load.koolreport.php";
require_once "MyReport.php";

$report = new MyReport;
$report->run()->render();

<?php
require_once "../../../../load.koolreport.php";
class MyReport extends \koolreport\KoolReport
{

}

<?php

use \koolreport\widgets\google\Sankey;
?>
<div class="report-content">
    <div class="text-center">
        <h1>Controlling labels</h1>
    </div>
    <div style="margin-bottom:50px;">
        <?php
        Sankey::create(array(
            "dataSource" => [
                ['From', 'To', 'Weight'],
                ['Brazil', 'Portugal', 5],
                ['Brazil', 'France', 1],
                ['Brazil', 'Spain', 1],
                ['Brazil', 'England', 1],
                ['Canada', 'Portugal', 1],
                ['Canada', 'France', 5],
                ['Canada', 'England', 1],
                ['Mexico', 'Portugal', 1],
                ['Mexico', 'France', 1],
                ['Mexico', 'Spain', 5],
                ['Mexico', 'England', 1],
                ['USA', 'Portugal', 1],
                ['USA', 'France', 1],
                ['USA', 'Spain', 1],
                ['USA', 'England', 5],
                ['Portugal', 'Angola', 2],
                ['Portugal', 'Senegal', 1],
                ['Portugal', 'Morocco', 1],
                ['Portugal', 'South Africa', 3],
                ['France', 'Angola', 1],
                ['France', 'Senegal', 3],
                ['France', 'Mali', 3],
                ['France', 'Morocco', 3],
                ['France', 'South Africa', 1],
                ['Spain', 'Senegal', 1],
                ['Spain', 'Morocco', 3],
                ['Spain', 'South Africa', 1],
                ['England', 'Angola', 1],
                ['England', 'Senegal', 1],
                ['England', 'Morocco', 2],
                ['England', 'South Africa', 7],
                ['South Africa', 'China', 5],
                ['South Africa', 'India', 1],
                ['South Africa', 'Japan', 3],
                ['Angola', 'China', 5],
                ['Angola', 'India', 1],
                ['Angola', 'Japan', 3],
                ['Senegal', 'China', 5],
                ['Senegal', 'India', 1],
                ['Senegal', 'Japan', 3],
                ['Mali', 'China', 5],
                ['Mali', 'India', 1],
                ['Mali', 'Japan', 3],
                ['Morocco', 'China', 5],
                ['Morocco', 'India', 1],
                ['Morocco', 'Japan', 3]
            ],
            "options" => array(
                "sankey" => array(
                    "node" => array(
                        "colors" => [
                            '#a6cee3',
                            '#b2df8a',
                            '#fb9a99',
                            '#fdbf6f',
                            '#cab2d6',
                            '#ffff99',
                            '#1f78b4',
                            '#33a02c'
                        ]
                    ),
                    "link" => array(
                        "colorMode" => 'gradient',
                        "colors" => ['#a6cee3', '#b2df8a', '#fb9a99', '#fdbf6f', '#cab2d6', '#ffff99', '#1f78b4', '#33a02c']
                    )
                )
            )
        ));
        ?>
    </div>