code: function Line(properties) {
                  if (properties)
                      for (var keys = Object.keys(properties), i = 0; i < keys.length; ++i)
                          if (properties[keys[i]] != null)
                              this[keys[i]] = properties[keys[i]];
              }
docs: Properties of a Line.
  @memberof perftools.profiles
  @interface ILine
  @property {number|Long} [functionId] Line functionId
  @property {number|Long} [line] Line line
   
  Constructs a new Line.
  @memberof perftools.profiles
  @classdesc Represents a Line.
  @constructor
  @param {perftools.profiles.ILine=} [properties] Properties to set