plugins/groovy/src/META-INF/intellilang-groovy-support.xml

<?xml version="1.0" encoding="iso-8859-1"?>

<idea-plugin version="2">

  <extensions defaultExtensionNs="org.intellij.intelliLang">
    <languageSupport implementation="org.intellij.plugins.intelliLang.inject.groovy.GroovyLanguageInjectionSupport"/>
    <injectionConfig config="resources/groovyInjections.xml"/>
  </extensions>
  <extensions defaultExtensionNs="org.intellij.groovy">
    <membersContributor implementation="org.intellij.plugins.intelliLang.inject.groovy.PatternEditorContextMembersProvider"/>
  </extensions>
  <extensions defaultExtensionNs="com.intellij">
    <multiHostInjector implementation="org.intellij.plugins.intelliLang.inject.groovy.GrConcatenation2InjectorAdapter" order="last"/>
    <multiHostInjector implementation="org.intellij.plugins.intelliLang.inject.groovy.GrConcatenationInjector"/>
    <psi.referenceContributor implementation="org.intellij.plugins.intelliLang.inject.groovy.GrLanguageReferenceProvider"/>
    <concatenationAwareInjector implementation="org.intellij.plugins.intelliLang.inject.groovy.GrConcatenationAwareInjector"/>
  </extensions>

</idea-plugin>