SdkStepInterface = function (sdkStep) {
  this._sdkStep = sdkStep;
  this.actionsEndingGame = null;
  this.actionInterfaceSequence = null;
  this.hasShownHandFullForPlayerIds = [];
  this.hasShownOutOfCardsForPlayerIds = [];
  this.loadPromise = null;
  this.resourcePackageIds = null;
}
SdkStepInterface - engine interface/wrapper for SDK steps. Add all engine specific step properties to this object.
@param sdkStep