@@ -37,7 +37,8 @@ public enum Modifier {
     VOLATILE,
     SYNCHRONIZED,
     NATIVE,
-    STRICTFP;
+    STRICTFP,
+    TRANSITIVE;
 
     final String codeRepresentation;
 
/*
 * Copyright (C) 2007-2010 Júlio Vilmar Gesser.
 * Copyright (C) 2011, 2013-2016 The JavaParser Team.
 *
 * This file is part of JavaParser.
 *
 * JavaParser can be used either under the terms of
 * a) the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * b) the terms of the Apache License
 *
 * You should have received a copy of both licenses in LICENCE.LGPL and
 * LICENCE.APACHE. Please refer to those files for details.
 *
 * JavaParser is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 */

package com.github.javaparser.ast;

import java.util.EnumSet;

/**
 * One of the modifiers known in Java.
 */
public enum Modifier {
    PUBLIC,
    PROTECTED,
    PRIVATE,
    ABSTRACT,
    STATIC,
    FINAL,
    TRANSIENT,
    VOLATILE,
    SYNCHRONIZED,
    NATIVE,
    STRICTFP;

    final String codeRepresentation;

    Modifier() {
        this.codeRepresentation = name().toLowerCase();
    }

    /**
     * @return the keyword represented by this modifier.
     */
    public String asString() {
        return codeRepresentation;
    }

    public EnumSet<Modifier> toEnumSet() {
        return EnumSet.of(this);
    }

    public static AccessSpecifier getAccessSpecifier(EnumSet<Modifier> modifiers) {
        if (modifiers.contains(Modifier.PUBLIC)) {
            return AccessSpecifier.PUBLIC;
        } else if (modifiers.contains(Modifier.PROTECTED)) {
            return AccessSpecifier.PROTECTED;
        } else if (modifiers.contains(Modifier.PRIVATE)) {
            return AccessSpecifier.PRIVATE;
        } else {
            return AccessSpecifier.DEFAULT;
        }
    }
}

I don't think it should be treated as a regular modifier.