```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

내부적으로 `open("./somefile.txt")` 는 "컨텍스트 관리자(Context Manager)"라고 불리는 객체를 생성합니다.

`with` 블록이 끝나면, 예외가 발생했더라도 파일을 닫도록 보장합니다.

        assertEquals(0x10, SmbConstants.TYPE_NAMED_PIPE);
        assertEquals(0x20, SmbConstants.TYPE_PRINTER);
        assertEquals(0x40, SmbConstants.TYPE_COMM);
    }

    @Test
    @DisplayName("Should define open flags constants")
    void testOpenFlagsConstants() {
        assertEquals(0x01, SmbConstants.O_RDONLY);
        assertEquals(0x02, SmbConstants.O_WRONLY);
        assertEquals(0x03, SmbConstants.O_RDWR);

	finished     bool
}

func (b *streamingBitrotWriter) Write(p []byte) (int, error) {
	if len(p) == 0 {
		return 0, nil
	}
	if b.finished {
		return 0, errors.New("bitrot write not allowed")
	}
	if int64(len(p)) > b.shardSize {
		return 0, errors.New("unexpected bitrot buffer size")
	}
	if int64(len(p)) < b.shardSize {
		b.finished = true
	}
	b.h.Reset()
	b.h.Write(p)
	hashBytes := b.h.Sum(nil)

			for i, ver := range vers {
				newVers := make([]xlMetaV2ShallowVersion, 0, len(ver))
				for _, v := range ver {
					v.header.Flags += xlFlags(i + 10)
					newVers = append(newVers, v)
				}
				vMod = append(vMod, newVers)
			}
			merged := mergeXLV2Versions(i, true, 0, vMod...)
			if len(merged) == 0 && i < 2 {
				t.Error("Did not get any results")
				return
			}
			if len(merged) > 0 && i >= 2 {

	}

	pdb.Mux.Lock()
	if len(pdb.Stmts.Keys()) == 0 {
		pdb.Mux.Unlock()
		t.Fatalf("prepared stmt can not be empty")
	}
	pdb.Mux.Unlock()

	pdb.Close()
	pdb.Mux.Lock()
	defer pdb.Mux.Unlock()
	if len(pdb.Stmts.Keys()) != 0 {
		t.Fatalf("prepared stmt should be empty")
	}
}

              callable, timeoutDuration, timeoutUnit, interruptibleMethods.contains(method));
        };
    return newProxy(interfaceType, handler);
  }

  // TODO: replace with version in common.reflect if and when it's open-sourced
  private static <T> T newProxy(Class<T> interfaceType, InvocationHandler handler) {
    Object object =
        Proxy.newProxyInstance(

/*
 * Copyright (C) 2011 The Android Open Source Project
 *
 * 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,

        throw new SmbException("ExtendedGSSContext is not implemented by GSSContext");
    }

    @Override
    public byte[] initSecContext(byte[] token, int off, int len) throws SmbException {
        try {
            return this.gssContext.initSecContext(token, off, len);
        } catch (GSSException e) {
            throw new SmbAuthException("GSSAPI mechanism failed", e);
        }
    }

/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * 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,

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