anchor.diff:      <plugins>
         ...
         <plugin>
  -        <groupId>io.quarkus</groupId>
  +        <groupId>${quarkus.platform.group-id}</groupId>
           <artifactId>quarkus-maven-plugin</artifactId>
  -        <version>${quarkus-plugin.version}</version>
  +        <version>${quarkus.platform.version}</version>
           <extensions>true</extensions>
           <configuration>
             <properties>
  
positive.code: <build>
      <plugins>
          <plugin> <2>
              <groupId>io.quarkus.platform</groupId>
              <artifactId>quarkus-maven-plugin</artifactId>
              <version>${quarkus.platform.version}</version>
              <extensions>true</extensions> <3>
  
negative.code:     <plugins>
        ...
        <plugin>
          <groupId>${quarkus.platform.group-id}</groupId>
          <artifactId>quarkus-maven-plugin</artifactId>
          <version>${quarkus.platform.version}</version>
          <extensions>true</extensions>
          <configuration>
            <systemProperties>
  