text: <?xml version="1.0"?>
  <!--
    Licensed to the Apache Software Foundation (ASF) under one or more
    contributor license agreements.  See the NOTICE file distributed with
    this work for additional information regarding copyright ownership.
    The ASF licenses this file to You under the Apache License, Version 2.0
    (the "License"); you may not use this file except in compliance with
    the License.  You may obtain a copy of the License at
  
         http://www.apache.org/licenses/LICENSE-2.0
  
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
  -->
  
  <ruleset name="Custom Rules"
           xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.io/ruleset_2_0_0.xsd">
  
      <description>
          My custom rules
      </description>
      <rule name="StaticFieldsMustBeImmutable"
            message="All static final fields must be immutable objects. No mutable static state is allowed."
            language="java"
            class="org.apache.geode.pmd.StaticFieldsMustBeImmutable">
          <description>
              Geode does not allow mutable static fields within the product code. All static
              fields must be marked final and be immutable objects.
  
              If the value of your static field is actually immutable, you can annotate the field
              itself with @Immutable, and it will be ignored by this rule.
          </description>
          <priority>3</priority>
          <example>
              <![CDATA[
                public class SomeClass {
                  //This field could be mutated by some outside code
                  private static final Map field = new HashMap();
                }
  			]]>
          </example>
      </rule>
  </ruleset>