code: function Property(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 Property.
  @memberof com.signalfx.metrics.protobuf
  @interface IProperty
  @property {string|null} [key] Property key
  @property {com.signalfx.metrics.protobuf.IPropertyValue|null} [value] Property value
   
  Constructs a new Property.
  @memberof com.signalfx.metrics.protobuf
  @classdesc Represents a Property.
  @implements IProperty
  @constructor
  @param {com.signalfx.metrics.protobuf.IProperty=} [properties] Properties to set