getLog = (curLevel) => {
        if (curLevel <= level) {
          goog.asserts.assert(
              shaka.log.logMap_.has(curLevel), 'Unexpected log level');
          return shaka.log.logMap_.get(curLevel);
        } else {
          return () => {};
        }
      }
Change the log level.  Useful for debugging in uncompiled mode.

@param {number} level
@exportDoc