feat: add getDefaultPluralFor method

Fixes #6313

Author: metacosm

CHANGELOG.md

@@ -9,6 +9,8 @@
 * Fix #6886: Remove invalid JUnit 4 references
 
 #### Improvements
+
+* Fix #6313: Add HasMetadata.getDefaultPluralFor method
 * Fix #6863: ensuring SerialExecutor does not throw RejectedExecutionException to prevent unnecessary error logs
 * Fix #6763: (crd-generator) YAML output customization
 * Fix #6880: LogWatch interface provides listeners on close stream event 

kubernetes-model-generator/kubernetes-model-core/src/main/java/io/fabric8/kubernetes/api/model/HasMetadata.java

@@ -122,6 +122,18 @@ static String getPlural(Class<?> clazz) {
         : Pluralize.toPlural(getSingular(clazz)));
   }
 
+  /**
+   * Retrieves the default plural form associated with the specified kind. Note that this is a best-effort attempt based on only
+   * the provided kind and might not correspond to the actual plural form if defined in a different way than the linguistic
+   * plural derived from the kind.
+   *
+   * @param kind the kind which default plural form we want to retrieve
+   * @return the default plural form associated with the specified kind
+   */
+  static String getDefaultPluralFor(String kind) {
+    return kind != null ? Pluralize.toPlural(kind.toLowerCase(Locale.ROOT)) : null;
+  }
+
   /**
    * Retrieves the singular form associated with the specified class as defined by the
    * {@link Singular} annotation or computes a default value (lower-cased version of the value