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/*
 * Copyright (c) 1997, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.xsom;

import com.sun.xml.xsom.visitor.XSTermFunction;
import com.sun.xml.xsom.visitor.XSTermVisitor;
import com.sun.xml.xsom.visitor.XSTermFunctionWithParam;

/**
 * A component that can be referenced from {@link XSParticle}
 * 
 * This interface provides a set of type check functions (isXXX),
 * which are essentially:
 * 
 * 
 * boolean isXXX() {
 *     return this instanceof XXX;
 * }
 * 
* * and a set of cast functions (asXXX), which are * essentially: * *
 * XXX asXXX() {
 *     if(isXXX())  return (XXX)this;
 *     else          return null;
 * }
 * 
*/ public interface XSTerm extends XSComponent { void visit( XSTermVisitor visitor ); T apply( XSTermFunction function ); T apply( XSTermFunctionWithParam function, P param ); // cast functions boolean isWildcard(); boolean isModelGroupDecl(); boolean isModelGroup(); boolean isElementDecl(); XSWildcard asWildcard(); XSModelGroupDecl asModelGroupDecl(); XSModelGroup asModelGroup(); XSElementDecl asElementDecl(); }




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