Finally fix checkstyle.

Author: akarnokd

config/checkstyle/checkstyle.xml

@@ -11,7 +11,7 @@
 <module name="Checker">
   <property name="severity" value="warning"/>
   <module name="SuppressionFilter">
-    <property name="file" value="${project_loc}/config/checkstyle/suppressions.xml"/>
+    <property name="file" value="${config_loc}/suppressions.xml"/>
     <property name="optional" value="false"/>
   </module>
   <module name="BeforeExecutionExclusionFileFilter">
@@ -28,6 +28,6 @@
   </module>
   <module name="Header">
     <property name="fileExtensions" value="java"/>
-    <property name="headerFile" value="${project_loc}/config/license/HEADER_JAVA"/>
+    <property name="headerFile" value="${config_loc}/../license/HEADER_JAVA"/>
   </module>
 </module>

config/checkstyle/suppressions.xml

@@ -6,10 +6,10 @@
 
 <suppressions>
 
-  <suppress checks="MissingJavadocMethod,JavadocMethod" files=".*[\\/]src[\\/]main[\\/]java[\\/]io[\\/]reactivex[\\/]rxjava4[\\/]internal[\\/].*\.java$"/>
-  <suppress checks="MissingJavadocMethod,JavadocMethod" files=".*[\\/]src[\\/]test[\\/]java[\\/].*\.java$"/>
-  <suppress checks="MissingJavadocMethod,JavadocMethod" files=".*[\\/]src[\\/]jmh[\\/]java[\\/].*\.java$"/>
-  <suppress checks="MissingJavadocMethod,JavadocMethod" files=".*Test\.java$"/>
-  <suppress checks="MissingJavadocMethod,JavadocMethod" files=".*Perf\.java$"/>
+  <suppress checks="MissingJavadocMethod|JavadocMethod" files=".*[\\/]src[\\/]main[\\/]java[\\/]io[\\/]reactivex[\\/]rxjava4[\\/]internal[\\/].*\.java$"/>
+  <suppress checks="MissingJavadocMethod|JavadocMethod" files=".*[\\/]src[\\/]test[\\/]java[\\/].*\.java$"/>
+  <suppress checks="MissingJavadocMethod|JavadocMethod" files=".*[\\/]src[\\/]jmh[\\/]java[\\/].*\.java$"/>
+  <suppress checks="MissingJavadocMethod|JavadocMethod" files=".*Test\.java$"/>
+  <suppress checks="MissingJavadocMethod|JavadocMethod" files=".*Perf\.java$"/>
 
 </suppressions>

src/jmh/java/io/reactivex/rxjava4/core/BinaryFlatMapPerf.java

@@ -22,7 +22,7 @@
 
 import io.reactivex.rxjava4.functions.Function;
 
-@SuppressWarnings("exports") 
+@SuppressWarnings("exports")
 @BenchmarkMode(Mode.Throughput)
 @Warmup(iterations = 5)
 @Measurement(iterations = 5, time = 5, timeUnit = TimeUnit.SECONDS)

src/main/java/io/reactivex/rxjava4/core/Flowable.java

@@ -20863,7 +20863,7 @@ public final Stream<T> blockingStream(int prefetch) {
         ObjectHelper.verifyPositive(prefetch, "prefetch");
         return RxJavaPlugins.onAssembly(new FlowableFlatMapStream<>(this, mapper, prefetch));
     }
-    
+
     /**
      * Construct a {@code Flowable} and use the given {@code generator}
      * to generate items on demand while running on the given {@link ExecutorService}.
@@ -20915,7 +20915,7 @@ public final Stream<T> blockingStream(int prefetch) {
     }
 
     /**
-     * Returns a {@code Flowable} that turns an upstream item an upstream item into 
+     * Returns a {@code Flowable} that turns an upstream item an upstream item into
      * zero or more downstream values by running on the given {@link ExecutorService}.
      * <p>
      * <dl>

src/main/java/io/reactivex/rxjava4/internal/virtual/FlowableVirtualCreateExecutor.java

@@ -48,7 +48,7 @@ protected void subscribeActual(Subscriber<? super T> s) {
         executor.submit(parent);
     }
 
-    static final class ExecutorVirtualCreateSubscription<T> extends AtomicLong 
+    static final class ExecutorVirtualCreateSubscription<T> extends AtomicLong
     implements Subscription, Callable<Void>, VirtualEmitter<T> {
 
         private static final long serialVersionUID = -6959205135542203083L;

src/main/java/io/reactivex/rxjava4/plugins/RxJavaPlugins.java

@@ -18,8 +18,6 @@
 import java.util.concurrent.*;
 import java.util.concurrent.Flow.Subscriber;
 
-import static java.util.concurrent.Flow.*;
-
 import io.reactivex.rxjava4.annotations.*;
 import io.reactivex.rxjava4.core.*;
 import io.reactivex.rxjava4.exceptions.*;

src/test/java/io/reactivex/rxjava4/tck/BaseTck.java

@@ -62,8 +62,8 @@ public static void before() {
     @AfterClass
     public static void after() {
         service.shutdown();
-    } 
-    
+    }
+
     /**
      * Creates an Iterable with the specified number of elements or an infinite one if
      * {@code elements >} {@link Integer#MAX_VALUE}.

src/test/java/io/reactivex/rxjava4/validators/JavadocWording.java

@@ -1107,7 +1107,7 @@ static void aOrAn(StringBuilder e, RxMethod m, String wrongPre, String word, Str
             }
             int nn = javadoc2.indexOf(" ", jj + 2);
             int mm = javadoc2.indexOf("}", jj + 2);
-            
+
             if (nn > mm) {
                 nn = mm - 1;
             }

src/test/java/io/reactivex/rxjava4/validators/ParamValidationCheckerTest.java

@@ -605,7 +605,7 @@ public void checkParallelFlowable() {
         defaultValues.put(Collector.class, Collectors.toList());
 
         defaultValues.put(ExecutorService.class, Executors.newVirtualThreadPerTaskExecutor());
-        
+
         VirtualTransformer<Object, Object> trs = (_, _) -> { };
         defaultValues.put(VirtualTransformer.class, trs);