function callerCallerFilename() {
      return new j$.StackTrace(new Error()).frames[3].file;
    }
Sets a user-defined property that will be provided to reporters as part of the properties field of {@link SuiteResult}
@name Env#setSuiteProperty
@since 3.6.0
@function
@param {String} key The name of the property
@param {*} value The value of the property