NSString *  const XGJobSpecificationCommandKey;
NSString *  const XGJobSpecificationTaskPrototypeIdentifierKey;
NSString * const  XGJobSpecificationArgumentsKey;
NSString * const  XGJobSpecificationNameKey;
NSString *  const  XGJobSpecificationApplicationIdentifierKey;
NSString *  const XGJobSpecificationTaskPrototypesKey;
NSString *  const   XGJobSpecificationTaskSpecificationsKey;
NSString *  const  XGJobSpecificationTypeKey;
NSString *  const XGJobSpecificationSubmissionIdentifierKey;
NSString *  const  XGJobSpecificationTypeTaskListValue;
