[GH-8286] Fix Go to Declaration for an enum method using an FQ name

-Accessing a Constant of an Enum/Class now uses FQ name if possible

Example:
```php
namespace test;

enum TestA{

        case X;

        public function get(string $param): string{
                return '';
        }
}

namespace test2;

enum TestB{

        case X;

        public function get(): string{
                return '';
        }
}

\test\TestA::X->get('xxx'); // go to declaration and mark occurences do not work
```

Author: NReib

php/php.editor/src/org/netbeans/modules/php/editor/model/impl/VariousUtils.java

@@ -1267,7 +1267,13 @@ private static String extractVariableTypeFromVariableBase(VariableBase varBase,
         } else if (varBase instanceof StaticConstantAccess) {
             StaticConstantAccess constantAccess = (StaticConstantAccess) varBase;
             if (!constantAccess.isDynamicName()) {
-                String clsName = CodeUtils.extractUnqualifiedName(constantAccess.getDispatcher());
+                Expression dispatcher = constantAccess.getDispatcher();
+                String clsName = null;
+                if (dispatcher instanceof NamespaceName) {
+                    clsName = CodeUtils.extractQualifiedName(dispatcher);
+                } else {
+                    clsName = CodeUtils.extractUnqualifiedName(dispatcher);
+                }
                 String constName = CodeUtils.extractQualifiedName(constantAccess.getConstant());
                 if (constName != null) {
                     if (clsName != null) {

php/php.editor/test/unit/data/testfiles/gotodeclaration/testIssueGH8286/testIssueGH8286.php

@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * 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.
+ */
+
+namespace test;
+
+enum TestA{
+
+  case X;
+
+  public function get(string $param): string{//01
+    return '';
+  }
+}
+
+namespace test2;
+
+enum TestB{
+
+  case X;
+
+  public function get(string $param): string{//02
+    return '';
+  }
+}
+
+\test\TestA::X->get();
+\test2\TestB::X->get();

php/php.editor/test/unit/data/testfiles/markoccurences/testIssueGH8286/testIssueGH8286.php

@@ -0,0 +1,45 @@
+<?php
+
+/*
+ * 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.
+ */
+
+namespace test;
+
+enum TestA{
+
+  case X;
+
+  public function get(string $param): string{
+    return '';
+  }
+}
+
+namespace test2;
+
+enum TestB{
+
+  case X;
+
+  public function get(): string{
+    return '';
+  }
+}
+
+\test\TestA::X->get();
+\test2\TestB::X->get();

php/php.editor/test/unit/data/testfiles/markoccurences/testIssueGH8286/testIssueGH8286.php.testIssueGH8286_01.occurrences

@@ -0,0 +1,2 @@
+  public function |>MARK_OCCURRENCES:get<|(string $param): string{
+\test\TestA::X->|>MARK_OCCURRENCES:ge^t<|();

php/php.editor/test/unit/data/testfiles/markoccurences/testIssueGH8286/testIssueGH8286.php.testIssueGH8286_02.occurrences

@@ -0,0 +1,2 @@
+  public function |>MARK_OCCURRENCES:get<|(): string{
+\test2\TestB::X->|>MARK_OCCURRENCES:ge^t<|();

php/php.editor/test/unit/src/org/netbeans/modules/php/editor/csl/GotoDeclarationGH8286Test.java

@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+package org.netbeans.modules.php.editor.csl;
+
+public class GotoDeclarationGH8286Test extends GotoDeclarationTestBase {
+
+    public GotoDeclarationGH8286Test(String testName) {
+        super(testName);
+    }
+
+    public void testIssueGH8286_01() throws Exception {
+        checkDeclaration(getTestPath(), "\\test\\TestA::X->ge^t();", "public function ^get(string $param): string{//01");
+    }
+
+    public void testIssueGH8286_02() throws Exception {
+        checkDeclaration(getTestPath(), "\\test2\\TestB::X->ge^t();", "public function ^get(string $param): string{//02");
+    }
+}

php/php.editor/test/unit/src/org/netbeans/modules/php/editor/csl/OccurrencesFinderImplGH8286Test.java

@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+package org.netbeans.modules.php.editor.csl;
+
+public class OccurrencesFinderImplGH8286Test extends OccurrencesFinderImplTestBase {
+
+    public OccurrencesFinderImplGH8286Test(String testName) {
+        super(testName);
+    }
+
+    public void testIssueGH8286_01() throws Exception {
+        checkOccurrences(getTestPath(), "\\test\\TestA::X->ge^t();", true);
+    }
+
+    public void testIssueGH8286_02() throws Exception {
+        checkOccurrences(getTestPath(), "\\test2\\TestB::X->ge^t();", true);
+    }
+}