diff --git a/PHPCSUtils/BackCompat/BCFile.php b/PHPCSUtils/BackCompat/BCFile.php
index e4ceb37a..bd311cca 100644
--- a/PHPCSUtils/BackCompat/BCFile.php
+++ b/PHPCSUtils/BackCompat/BCFile.php
@@ -76,7 +76,7 @@ final class BCFile
      *
      * Changelog for the PHPCS native function:
      * - Introduced in PHPCS 0.0.5.
-     * - PHPCS 3.12.0: hardening to handle unfinished closure better.
+     * - The upstream method has received no significant updates since PHPCS 3.13.0.
      *
      * @see \PHP_CodeSniffer\Files\File::getDeclarationName() Original source.
      * @see \PHPCSUtils\Utils\ObjectDeclarations::getName()   PHPCSUtils native improved version.
@@ -98,49 +98,7 @@ final class BCFile
      */
     public static function getDeclarationName(File $phpcsFile, $stackPtr)
     {
-        $tokens = $phpcsFile->getTokens();
-
-        $tokenCode = $tokens[$stackPtr]['code'];
-
-        if ($tokenCode === T_ANON_CLASS || $tokenCode === T_CLOSURE) {
-            return null;
-        }
-
-        if ($tokenCode !== T_FUNCTION
-            && $tokenCode !== T_CLASS
-            && $tokenCode !== T_INTERFACE
-            && $tokenCode !== T_TRAIT
-            && $tokenCode !== T_ENUM
-        ) {
-            throw new RuntimeException('Token type "' . $tokens[$stackPtr]['type'] . '" is not T_FUNCTION, T_CLASS, T_INTERFACE, T_TRAIT or T_ENUM');
-        }
-
-        if ($tokenCode === T_FUNCTION
-            && strtolower($tokens[$stackPtr]['content']) !== 'function'
-        ) {
-            // This is a function declared without the "function" keyword.
-            // So this token is the function name.
-            return $tokens[$stackPtr]['content'];
-        }
-
-        $stopPoint = $phpcsFile->numTokens;
-        if (isset($tokens[$stackPtr]['parenthesis_opener']) === true) {
-            // For functions, stop searching at the parenthesis opener.
-            $stopPoint = $tokens[$stackPtr]['parenthesis_opener'];
-        } elseif (isset($tokens[$stackPtr]['scope_opener']) === true) {
-            // For OO tokens, stop searching at the open curly.
-            $stopPoint = $tokens[$stackPtr]['scope_opener'];
-        }
-
-        $content = null;
-        for ($i = $stackPtr; $i < $stopPoint; $i++) {
-            if ($tokens[$i]['code'] === T_STRING) {
-                $content = $tokens[$i]['content'];
-                break;
-            }
-        }
-
-        return $content;
+        return $phpcsFile->getDeclarationName($stackPtr);
     }
 
     /**