diff --git a/psalm.xml b/psalm.xml
index 2d01da2..cb9d2c4 100644
--- a/psalm.xml
+++ b/psalm.xml
@@ -6,7 +6,7 @@
     xmlns="https://getpsalm.org/schema/config"
     xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd"
     findUnusedBaselineEntry="true"
-    findUnusedCode="true"
+    findUnusedCode="false"
 >
     <projectFiles>
         <directory name="src" />
diff --git a/src/Converter.php b/src/Converter.php
index f4815e5..be0c1ad 100644
--- a/src/Converter.php
+++ b/src/Converter.php
@@ -22,21 +22,19 @@
 /**
  * Class to convert an xml string to array
  */
-final class Converter
+class Converter
 {
     private array $options;
 
     /**
      * Static constructor.
-     *
-     * @psalm-suppress PossiblyUnusedMethod Public api
      */
-    public static function create(array $options = []): self
+    public static function create(array $options = []): static
     {
-        return new self($options);
+        return new static($options);
     }
 
-    public function __construct(array $options = [])
+    final public function __construct(array $options = [])
     {
         $resolver = new OptionsResolver();
         $this->configureOptions($resolver);
@@ -51,8 +49,6 @@ public function __construct(array $options = [])
      * @return array
      *
      * @throws ConverterException If errors while parsing XML.
-     *
-     * @psalm-suppress PossiblyUnusedMethod Public api
      */
     public function convert(string $xmlToParse): array
     {
@@ -70,30 +66,6 @@ public function convert(string $xmlToParse): array
         return $array;
     }
 
-    /**
-     * Create a PHP array from an XML file.
-     *
-     * @param string $filename The XML file to parse.
-     *
-     * @return array
-     *
-     * @throws \RuntimeException If the file does not exist or it's not readable
-     *
-     * @psalm-suppress PossiblyUnusedMethod Public api
-     */
-    public function convertFile(string $filename): array
-    {
-        if (!file_exists($filename)) {
-            throw new \RuntimeException("The file `$filename` does not exist.");
-        }
-
-        if (!is_readable($filename)) {
-            throw new \RuntimeException("The file `$filename` is not readable: do you have the correct permissions?");
-        }
-
-        return $this->convert(file_get_contents($filename));
-    }
-
     private function configureOptions(OptionsResolver $resolver): void
     {
         $resolver->setDefaults([
diff --git a/src/FileConverter.php b/src/FileConverter.php
new file mode 100644
index 0000000..17a6e39
--- /dev/null
+++ b/src/FileConverter.php
@@ -0,0 +1,44 @@
+<?php declare(strict_types=1);
+/*
+ * Copyright (c) Cristiano Cinotti 2024.
+ *
+ *  Licensed 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 Susina\XmlToArray;
+
+class FileConverter extends Converter
+{
+    /**
+     * Create a PHP array from an XML file.
+     *
+     * @param string $filename The XML file to parse.
+     *
+     * @return array
+     *
+     * @throws \RuntimeException If the file does not exist or it's not readable.
+     *
+     * @psalm-suppress ParamNameMismatch It's a desired behavior, since in this method the parameter
+     *                                   is a filename while in the parent methods it's the xml to convert.
+     */
+    public function convert(string $filename): array
+    {
+        if (!file_exists($filename)) {
+            throw new \RuntimeException("The file `$filename` does not exist.");
+        }
+
+        if (!is_readable($filename)) {
+            throw new \RuntimeException("The file `$filename` is not readable: do you have the correct permissions?");
+        }
+
+        return parent::convert(file_get_contents($filename));
+    }
+}
diff --git a/tests/Functional/ConversionTest.php b/tests/Functional/ConversionTest.php
index 44d7121..fadd92b 100644
--- a/tests/Functional/ConversionTest.php
+++ b/tests/Functional/ConversionTest.php
@@ -20,7 +20,7 @@
     $xmlFile = __DIR__ . "/../Fixtures/$file.xml";
 
     $expected = include($phpFile);
-    $actual = Converter::create()->convertFile($xmlFile);
+    $actual = Converter::create()->convert(file_get_contents($xmlFile));
 
     expect($actual)->toBe($expected);
 })->with(['joomla', 'propel']);
diff --git a/tests/Unit/ConverterTest.php b/tests/Unit/ConverterTest.php
index 0aa82ca..3478ac9 100644
--- a/tests/Unit/ConverterTest.php
+++ b/tests/Unit/ConverterTest.php
@@ -121,19 +121,3 @@
     $actual = Converter::create(['preserveFirstTag' => true])->convert($xml);
     expect($actual)->toBe($expected);
 });
-
-it('converts an XML file to an array', function (string $xml, array $expected) {
-    $file = vfsStream::newFile("test_file.xml")->at($this->getRoot())->setContent($xml);
-    $actual = $this->converter->convertFile($file->url());
-
-    expect($expected)->toBe($actual);
-})->with('Xml');
-
-it('try to convert a not existent file', function () {
-    $this->converter->convertFile('vfs://root/notexistent.xml');
-})->throws(\RuntimeException::class, 'The file `vfs://root/notexistent.xml` does not exist.');
-
-it('try to convert a not readable file', function () {
-    $file = vfsStream::newFile('notreadable.xml', 200)->at($this->getRoot())->setContent("<root></root>");
-    $this->converter->convertFile($file->url());
-})->throws(\RuntimeException::class, 'The file `vfs://root/notreadable.xml` is not readable: do you have the correct permissions?');
diff --git a/tests/Unit/FileConverterTest.php b/tests/Unit/FileConverterTest.php
new file mode 100644
index 0000000..cb9db97
--- /dev/null
+++ b/tests/Unit/FileConverterTest.php
@@ -0,0 +1,38 @@
+<?php declare(strict_types=1);
+/*
+ * Copyright (c) Cristiano Cinotti 2024.
+ *
+ *  Licensed 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.
+ */
+
+use org\bovigo\vfs\vfsStream;
+use Susina\XmlToArray\FileConverter;
+
+it('instantiate the correct object via static method', function () {
+    expect(FileConverter::create())->toBeInstanceOf(FileConverter::class);
+});
+
+it('converts an XML file to an array', function (string $xml, array $expected) {
+    $file = vfsStream::newFile("test_file.xml")->at($this->getRoot())->setContent($xml);
+    $actual = FileConverter::create()->convert($file->url());
+
+    expect($expected)->toBe($actual);
+})->with('Xml');
+
+it('try to convert a not existent file', function () {
+    $converter = new FileConverter();
+    $converter->convert('vfs://root/notexistent.xml');
+})->throws(\RuntimeException::class, 'The file `vfs://root/notexistent.xml` does not exist.');
+
+it('try to convert a not readable file', function () {
+    $file = vfsStream::newFile('notreadable.xml', 200)->at($this->getRoot())->setContent("<root></root>");
+    FileConverter::create()->convert($file->url());
+})->throws(\RuntimeException::class, 'The file `vfs://root/notreadable.xml` is not readable: do you have the correct permissions?');