[#6428] Add missing overload WindowPartitionByStep.partitionBy(Collection<? extends Field<?>>)

jOOQ/src/main/java/org/jooq/WindowPartitionByStep.java

@@ -47,6 +47,8 @@ import static org.jooq.SQLDialect.POSTGRES;
 // ...
 // ...
 
+import java.util.Collection;
+
 /**
  * This type is used for the window function DSL API.
  * <p>
@@ -71,6 +73,12 @@ public interface WindowPartitionByStep<T> extends WindowOrderByStep<T> {
     @Support({ CUBRID, FIREBIRD_3_0, MYSQL_8_0, POSTGRES })
     WindowOrderByStep<T> partitionBy(Field<?>... fields);
 
+    /**
+     * Add a <code>PARTITION BY</code> clause to the window functions.
+     */
+    @Support({ CUBRID, FIREBIRD_3_0, MYSQL_8_0, POSTGRES })
+    WindowOrderByStep<T> partitionBy(Collection<? extends Field<?>> fields);
+
     /**
      * Add a <code>PARTITION BY 1</code> clause to the window functions, where
      * such a clause is required by the syntax of an RDBMS.

jOOQ/src/main/java/org/jooq/impl/Function.java

@@ -621,6 +621,12 @@ class Function<T> extends AbstractField<T> implements
         return this;
     }
 
+    @Override
+    public final WindowOrderByStep<T> partitionBy(Collection<? extends Field<?>> fields) {
+        windowSpecification.partitionBy(fields);
+        return this;
+    }
+
     @Override
     @Deprecated
     public final WindowOrderByStep<T> partitionByOne() {