org.eclipse.blockchain.core/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension
         id="org.eclipse.blockchain.core.ethereum.nature"
         name="Ethereum Nature"
         point="org.eclipse.core.resources.natures">
      <runtime>
         <run
               class="org.eclipse.blockchain.core.EthereumNature">
         </run>
      </runtime>
      <builder
            id="org.eclipse.blockchain.core.ethbuilder">
      </builder>
   </extension>
   <extension
         id="ethbuilder"
         point="org.eclipse.core.resources.builders">
      <builder
            hasNature="true">
         <run
               class="org.eclipse.blockchain.core.EthereumBuilder">
         </run>
      </builder>
   </extension>

</plugin>