title: Disable legend item click in a Highchart defined as JSON
body: <p>I need to disable the ability to click items in the legend in a HighChart. Normally I would use the following on a point or series as appropriate:</p>
  
  <pre><code>events: {
    legendItemClick: function() {
      return false;
  }
  </code></pre>
  
  <p>However the page I'm working on requires the <em>entire HighChart</em> to be defined within a JSON object, for example:</p>
  
  <pre><code>{
    "chart": { "type":"column"},
    "xAxis": { "categories":[a, b, c, d] },
    "series": [{
      "name": "name",
      "data": [0,1,2,3]
    }]
  }
  </code></pre>
  
  <p>Obviously I can't put a function within a JSON, so I'm struggling to find a way to disable legendItemClick.</p>
  
  <p>I could override the site templates to build the chart in JS, and then I could solve my problem. But I've been requested to try to make it work within the current system.</p>
  
  <p>I would welcome any suggestions.</p>
  
  <p>EDIT: Added some clarity on why I can't use a function.</p>