class UseFunction extends AbstractVariadicFunction {

  private static final long serialVersionUID = 1710427343500339000L;

  private UseFunction() {

  }

  public static final UseFunction INSTANCE = new UseFunction();


  /**
   * use package.{class1, class2};
   */
  @Override
  public AviatorObject variadicCall(final Map<String, Object> env, final AviatorObject... args) {
    if (args.length < 3) {
      throw new IllegalArgumentException(
          "Wrong arguments(" + args.length + ") passed to __use variadicCall");
    }
    if (args[0].getAviatorType() != AviatorType.JavaType) {
      throw new IllegalArgumentException("Can't use other aviator type except varaible");
    }
    final String packageSym = ((AviatorJavaType) args[0]).getName();

    assert (env instanceof Env);
    final Env theEnv = (Env) env;

    for (int i = 1; i < args.length; i++) {
      if (args[i].getAviatorType() != AviatorType.JavaType) {
        throw new IllegalArgumentException("Can't use other aviator type except varaible");
      }
      final String name = ((AviatorJavaType) args[i]).getName();
      addSym(theEnv, packageSym, name);
    }
    return AviatorNil.NIL;
  }

  private void addSym(final Env theEnv, final String packageSym, final String name) {
    if (name.equals("*")) {
      theEnv.addPackageSymbol(packageSym);
    } else {
      theEnv.addSymbol(packageSym + name);
    }
  }

  /**
   * use package.class;
   */
  @Override
  public AviatorObject call(final Map<String, Object> env, final AviatorObject arg1) {<FILL_FUNCTION_BODY>}



  /**
   * use package.* or use.package.{class};
   */
  @Override
  public AviatorObject call(final Map<String, Object> env, final AviatorObject arg1,
      final AviatorObject arg2) {
    if (arg1.getAviatorType() != AviatorType.JavaType) {
      throw new IllegalArgumentException("Can't use other aviator type except varaible");
    }
    if (arg2.getAviatorType() != AviatorType.JavaType) {
      throw new IllegalArgumentException("Can't use other aviator type except varaible");
    }

    final String packageSym = ((AviatorJavaType) arg1).getName();
    final String name = ((AviatorJavaType) arg2).getName();
    assert (env instanceof Env);
    final Env theEnv = (Env) env;

    addSym(theEnv, packageSym, name);

    return AviatorNil.NIL;
  }



  @Override
  public String getName() {
    return Constants.USE_VAR.getLexeme();
  }

}


    if (arg1.getAviatorType() != AviatorType.JavaType) {
      throw new IllegalArgumentException("Can't use other aviator type except varaible");
    }

    final String sym = ((AviatorJavaType) arg1).getName();

    assert (env instanceof Env);

    ((Env) env).addSymbol(sym);
    return AviatorNil.NIL;
  
<methods>public non-sealed void <init>() ,public com.googlecode.aviator.runtime.type.AviatorObject call() throws java.lang.Exception,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject) ,public transient com.googlecode.aviator.runtime.type.AviatorObject call(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject, com.googlecode.aviator.runtime.type.AviatorObject[]) ,public java.lang.String desc(Map<java.lang.String,java.lang.Object>) ,public com.googlecode.aviator.runtime.type.AviatorType getAviatorType() ,public java.lang.Object getValue(Map<java.lang.String,java.lang.Object>) ,public int innerCompare(com.googlecode.aviator.runtime.type.AviatorObject, Map<java.lang.String,java.lang.Object>) ,public void run() ,public transient abstract com.googlecode.aviator.runtime.type.AviatorObject variadicCall(Map<java.lang.String,java.lang.Object>, com.googlecode.aviator.runtime.type.AviatorObject[]) <variables>private static final long serialVersionUID