datasketches-memory-java8/src/main/java/org/apache/datasketches/memory/internal/MapWritableBufferImpl.java [93:140]:
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    if (byteOrder == ByteOrder.nativeOrder()) {
      typeIdOut |= NATIVE;
      return new MapWritableBufferImpl(
          dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes);
    } else {
      typeIdOut |= NONNATIVE;
      return new MapNonNativeWritableBufferImpl(
          dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes);
    }
  }

  @Override
  public void close() {
    checkValid();
    checkThread(owner);
    dirWMap.close(); //checksValidAndThread
  }

  @Override
  public void force() {
    checkValid();
    checkThread(owner);
    checkNotReadOnly();
    dirWMap.force(); //checksValidAndThread
  }

  @Override
  Object getUnsafeObject() {
    return null;
  }

  @Override
  public boolean isLoaded() {
    checkValid();
    checkThread(owner);
    return dirWMap.isLoaded(); //checksValidAndThread
  }

  @Override
  public boolean isValid() {
    return dirWMap.getValid().get();
  }

  @Override
  public void load() {
    checkValid();
    checkThread(owner);
    dirWMap.load(); //checksValidAndThread
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datasketches-memory-java8/src/main/java/org/apache/datasketches/memory/internal/MapWritableMemoryImpl.java [78:125]:
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    if (byteOrder == ByteOrder.nativeOrder()) {
      typeIdOut |= NATIVE;
      return new MapWritableBufferImpl(
          dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes);
    } else {
      typeIdOut |= NONNATIVE;
      return new MapNonNativeWritableBufferImpl(
          dirWMap, offsetBytes, capacityBytes, typeIdOut, cumOffsetBytes);
    }
  }

  @Override
  public void close() {
    checkValid();
    checkThread(owner);
    dirWMap.close();
  }

  @Override
  public void force() {
    checkValid();
    checkThread(owner);
    checkNotReadOnly();
    dirWMap.force(); //checksValidAndThread
  }

  @Override
  Object getUnsafeObject() {
    return null;
  }

  @Override
  public boolean isLoaded() {
    checkValid();
    checkThread(owner);
    return dirWMap.isLoaded(); //checksValidAndThread
  }

  @Override
  public boolean isValid() {
    return dirWMap.getValid().get();
  }

  @Override
  public void load() {
    checkValid();
    checkThread(owner);
    dirWMap.load(); //checksValidAndThread
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