docs: function prepareStackTraceError(err, structuredStackTrace) {
    var returnObj = new CustomStackTrace();
    var topFrame = {};
  
    if (!Array.isArray(structuredStackTrace)) {
  
      return returnObj;
    }
    // Get the topframe of the CallSite array
    topFrame = structuredStackTrace[0];
  
    returnObj.setFilePath(topFrame.getFileName())
        .setLineNumber(topFrame.getLineNumber())
        .setFunctionName(topFrame.getFunctionName())
        .setStringifyStructuredCallList(
            extractStructuredCallList(structuredStackTrace));
  
    return returnObj;
  }