samples/conditionalOperatorConvertor/META-INF/plugin.xml

<idea-plugin version="2">
    <name>Conditional Operator Converter</name>
    <id>ConditionalOperatorConverter</id>
    <description>Intention action that suggests to convert a conditional operator into
        'if' block.
    </description>
    <version>1.3</version>
    <vendor>JetBrains</vendor>
   <!--
    <idea-version since-build="2000"/>
    -->

    <extensions defaultExtensionNs="com.intellij">
      <intentionAction>
        <className>com.intellij.codeInsight.intention.ConditionalOperatorConvertor</className>
        <category>Conditional Operator</category>
         <descriptionDirectoryName>ConditionalOperatorConvertor</descriptionDirectoryName>

      </intentionAction>
    </extensions>

    <project-components>
        <component>
            <implementation-class>com.intellij.codeInsight.intention.ConditionalOperatorConvertor</implementation-class>
        </component>
    </project-components>
</idea-plugin>