<idea-plugin version="2">
  <extensions defaultExtensionNs="com.intellij">
    <errorHandler implementation="com.intellij.diagnostic.ITNReporter"/>
    <!-- YAML -->
    <lang.parserDefinition language="yaml" implementationClass="org.jetbrains.yaml.YAMLParserDefinition"/>
    <lang.commenter language="yaml" implementationClass="org.jetbrains.yaml.YAMLCommenter"/>
    <lang.syntaxHighlighterFactory key="yaml" implementationClass="org.jetbrains.yaml.YAMLSyntaxHighlighterFactory"/>
    <colorSettingsPage implementation="org.jetbrains.yaml.YAMLColorsPage"/>
    <lang.braceMatcher language="yaml" implementationClass="org.jetbrains.yaml.YAMLPairedBraceMatcher"/>
    <lang.foldingBuilder language="yaml" implementationClass="org.jetbrains.yaml.folding.YAMLFoldingBuilder"/>
    <fileTypeFactory implementation="org.jetbrains.yaml.YAMLFileTypeLoader"/>
    <editor.backspaceModeOverride language="yaml" implementationClass="com.intellij.codeInsight.editorActions.SmartBackspaceDisabler"/>
    <lang.psiStructureViewFactory language="yaml" implementationClass="org.jetbrains.yaml.structureView.YAMLStructureViewFactory"/>
    <langCodeStyleSettingsProvider implementation="org.jetbrains.yaml.YAMLLanguageCodeStyleSettingsProvider"/>
    <codeStyleSettingsProvider implementation="org.jetbrains.yaml.YAMLCodeStyleSettingsProvider"/>
   </extensions>
  <project-components>
    <component>
        <implementation-class>org.jetbrains.yaml.psi.YAMLPsiManager</implementation-class>
    </component>
  </project-components>
</idea-plugin>
<idea-plugin version="2">
  <extensions defaultExtensionNs="com.intellij">
    <errorHandler implementation="com.intellij.diagnostic.ITNReporter"/>
    <!-- YAML -->
    <lang.parserDefinition language="yaml" implementationClass="org.jetbrains.yaml.YAMLParserDefinition"/>
    <lang.commenter language="yaml" implementationClass="org.jetbrains.yaml.YAMLCommenter"/>
    <lang.syntaxHighlighterFactory language="yaml" implementationClass="org.jetbrains.yaml.YAMLSyntaxHighlighterFactory"/>
    <colorSettingsPage implementation="org.jetbrains.yaml.YAMLColorsPage"/>
    <lang.braceMatcher language="yaml" implementationClass="org.jetbrains.yaml.YAMLPairedBraceMatcher"/>
    <lang.foldingBuilder language="yaml" implementationClass="org.jetbrains.yaml.folding.YAMLFoldingBuilder"/>
    <fileTypeFactory implementation="org.jetbrains.yaml.YAMLFileTypeLoader"/>
    <editor.backspaceModeOverride language="yaml" implementationClass="com.intellij.codeInsight.editorActions.SmartBackspaceDisabler"/>
    <lang.psiStructureViewFactory language="yaml" implementationClass="org.jetbrains.yaml.structureView.YAMLStructureViewFactory"/>
    <langCodeStyleSettingsProvider implementation="org.jetbrains.yaml.YAMLLanguageCodeStyleSettingsProvider"/>
    <codeStyleSettingsProvider implementation="org.jetbrains.yaml.YAMLCodeStyleSettingsProvider"/>
   </extensions>
  <project-components>
    <component>
        <implementation-class>org.jetbrains.yaml.psi.YAMLPsiManager</implementation-class>
    </component>
  </project-components>
</idea-plugin>
Change usages of 'key' to 'language' in lang.syntaxHighlighterFactory
Change usages of 'key' to 'language' in lang.syntaxHighlighterFactory
