setHeaderValue property
Implementation
_i2.Future<void> Function(_i2.String) get setHeaderValue =>
    (_i2.String p0) => _i4.promiseToFuture(_i4.callMethod(
          _i4.getProperty(
            this,
            'setHeaderValue',
          ),
          r'call',
          [
            this,
            p0,
          ],
        ));