code: function(code)
          {
              var lines = [],
                  firstLine = parseInt(this.getParam('first-line'))
                  ;
  
              eachLine(code, function(line, index)
              {
                  lines.push(index + firstLine);
              });
  
              return lines;
          }
docs: Creates an array containing integer line numbers starting from the 'first-line' param.
  @return {Array} Returns array of integers.