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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/*   Copyright 2004 The Apache Software Foundation
 *
 *   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.
 */

package org.apache.xmlbeans;

import javax.xml.namespace.QName;

/**
 * Represents a model group.
 * 
 * A model group is a syntactic construct, not a part of
 * the logical model. For example, types declared within a
 * model group become local to the type that uses the group -
 * they're not local to the model group itself. Therefore in
 * the logical model of a schema type system, a model group
 * doesn't represent anything. Its contents are merged into
 * the logical model at parse time.
 */
public interface SchemaModelGroup extends SchemaComponent, SchemaAnnotated
{
    /**
     * Returns SchemaComponent.GROUP.
     */
    int getComponentType();

    /**
     * The name of the model group.
     */
    QName getName();

    /**
     * Used to allow on-demand loading of model groups.
     * 
     * @exclude
     */
    public final static class Ref extends SchemaComponent.Ref
    {
        public Ref(SchemaModelGroup modelGroup)
            { super(modelGroup); }

        public Ref(SchemaTypeSystem system, String handle)
            { super(system, handle); }

        public final int getComponentType()
            { return SchemaComponent.MODEL_GROUP; }

        public final SchemaModelGroup get()
            { return (SchemaModelGroup)getComponent(); }
    }

    /**
     * Returns user-specific information.
     * @see SchemaBookmark
     */
    Object getUserData();
}