code: function Evidence(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 an Evidence.
  @memberof stratumn.chainscript
  @interface IEvidence
  @property {string|null} [version] Evidence version
  @property {string|null} [backend] Evidence backend
  @property {string|null} [provider] Evidence provider
  @property {Uint8Array|null} [proof] Evidence proof
   
  Constructs a new Evidence.
  @memberof stratumn.chainscript
  @classdesc Represents an Evidence.
  @implements IEvidence
  @constructor
  @param {stratumn.chainscript.IEvidence=} [properties] Properties to set