title: Eclipse conflicting handlers
body: <p>On developing an eclipse plugin i created a command in the Manifest extensions  with id crtc_v4.session with a default handler crtc_v4.handlers.StartSession , I added a handler in the manifest for this command this handler enables the command according to the variable crtc_v4.sessionvar.</p>
  
  <p>The problem which appears on the console is :</p>
  
  <pre><code>!MESSAGE Conflicting handlers for crtc_v4.session:  {crtc_v4.handlers.StartSession@98bc5c} vs {crtc_v4.handlers.StartSession@1265d09}
  </code></pre>
  
  <p>But it doesn't block running the plugin. I'm asking about the solution for this problem, and whether it affects the performance of my plugin in general ?</p>
  
  <p>Edit : </p>
  
  <p>The snippet that define the command :</p>
  
  <pre><code> &lt;extension
       point="org.eclipse.ui.menus"&gt;
    &lt;menuContribution
          allPopups="false"
          locationURI="toolbar:org.eclipse.ui.main.toolbar"&gt;
       &lt;toolbar
             id="crtc_v5.crtctoolbar"&gt;
          &lt;command
                commandId="crtc_v5.session"
                icon="icons/neutral.png"
                label="Start Session"
                style="push"&gt;
          &lt;/command&gt;
       &lt;/toolbar&gt;
    &lt;/menuContribution&gt;
  </code></pre>
  
  <p></p>
  
  <p>The snippet that define the handler :</p>
  
  <pre><code> &lt;/extension&gt;
        &lt;command
          defaultHandler="crtc_v5.handlers.StartSession"
          id="crtc_v5.session"
          name="session"&gt;
    &lt;/command&gt;
   &lt;/extension&gt;
  </code></pre>
  
  <p>And here is the enablement against sessionvar :</p>
  
  <pre><code>  &lt;extension
       point="org.eclipse.ui.handlers"&gt;
    &lt;handler
          class="crtc_v5.handlers.StartSession"
          commandId="crtc_v5.session"&gt;
       &lt;enabledWhen&gt;
          &lt;with
                variable="crtc_v5.sessionvar"&gt;
             &lt;equals
                   value="LOGGEDIN"&gt;
             &lt;/equals&gt;
          &lt;/with&gt;
       &lt;/enabledWhen&gt;
    &lt;/handler&gt;
  </code></pre>
  
  <p></p>