title: Upgrading io.projectreactor version from 2.0.x to 3.0.4 - Using Spring framework
body: <p>I have an issue while trying to make the upgrade.</p>
  
  <p>Currently i'm using version 2.0.x, and in particular -</p>
  
  <pre><code>reactor.bus
  reactor.rx.Stream
  reactor.rx.Streams
  reactor.core.processor.RingBufferProcessor
  reactor.fn.Consumer
  </code></pre>
  
  <p>I'm using maven, and i have a single dependency regarding 'projectreactor' -</p>
  
  <pre><code>&lt;groupId&gt;io.projectreactor.spring&lt;/groupId&gt;
  &lt;artifactId&gt;reactor-spring-core&lt;/artifactId&gt;
  </code></pre>
  
  <p>When upgrading to version 3.0.4.RELEASE, in order to keep using all the things i used before, i need to explicitly import -</p>
  
  <pre><code>&lt;groupId&gt;io.projectreactor&lt;/groupId&gt;
  &lt;artifactId&gt;reactor-bus&lt;/artifactId&gt;
  </code></pre>
  
  <p>And</p>
  
  <pre><code>&lt;groupId&gt;io.projectreactor&lt;/groupId&gt;
  &lt;artifactId&gt;reactor-stream&lt;/artifactId&gt;
  </code></pre>
  
  <p>but i'm still missing</p>
  
  <pre><code>reactor.core.processor.RingBufferProcessor
  reactor.fn.Consumer
  </code></pre>
  
  <p>and i'm not sure what to do.</p>