code: function Sample(properties) {
                  this.locationId = [];
                  this.value = [];
                  this.label = [];
                  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 Sample.
  @memberof perftools.profiles
  @interface ISample
  @property {Array.<number|Long>} [locationId] Sample locationId
  @property {Array.<number|Long>} [value] Sample value
  @property {Array.<perftools.profiles.ILabel>} [label] Sample label
   
  Constructs a new Sample.
  @memberof perftools.profiles
  @classdesc Represents a Sample.
  @constructor
  @param {perftools.profiles.ISample=} [properties] Properties to set