external/inferred annotation gutter markers in Groovy

plugins/groovy/src/META-INF/plugin.xml

@@ -404,6 +404,8 @@
     <refactoring.helper implementation="org.jetbrains.plugins.groovy.refactoring.GroovyImportOptimizerRefactoringHelper"/>
     <codeInsight.lineMarkerProvider language="Groovy"
                                     implementationClass="org.jetbrains.plugins.groovy.codeInsight.GroovyLineMarkerProvider"/>
+    <codeInsight.lineMarkerProvider language="Groovy"
+                                    implementationClass="com.intellij.codeInsight.ExternalAnnotationsLineMarkerProvider"/>
     <codeInsight.gotoSuper language="Groovy"
                            implementationClass="org.jetbrains.plugins.groovy.codeInsight.navigation.actions.GroovyGotoSuperHandler"/>
     <lookup.charFilter implementation="org.jetbrains.plugins.groovy.lang.completion.GroovyReferenceCharFilter"/>