Update 'toJavaTransformer'
Update 'toJavaTransformer'

ReactiveX/RxScala,jbripley/RxScala,zhongdj/RxScala,zjrstar/RxScala,hermanbanken/RxScala,joohnnie/RxScala,TracyLu/RxScala,jbripley/RxScala,hermanbanken/RxScala