fbcore/src/main/java/com/facebook/common/references/DefaultCloseableReference.java [40:57]:
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  @Override
  protected void finalize() throws Throwable {
    try {
      // We put synchronized here so that lint doesn't warn about accessing mIsClosed, which is
      // guarded by this. Lint isn't aware of finalize semantics.
      synchronized (this) {
        if (mIsClosed) {
          return;
        }
      }

      T ref = mSharedReference.get();
      FLog.w(
          TAG,
          "Finalized without closing: %x %x (type = %s)",
          System.identityHashCode(this),
          System.identityHashCode(mSharedReference),
          ref == null ? null : ref.getClass().getName());
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fbcore/src/main/java/com/facebook/common/references/FinalizerCloseableReference.java [38:55]:
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  @Override
  protected void finalize() throws Throwable {
    try {
      // We put synchronized here so that lint doesn't warn about accessing mIsClosed, which is
      // guarded by this. Lint isn't aware of finalize semantics.
      synchronized (this) {
        if (mIsClosed) {
          return;
        }
      }

      T ref = mSharedReference.get();
      FLog.w(
          TAG,
          "Finalized without closing: %x %x (type = %s)",
          System.identityHashCode(this),
          System.identityHashCode(mSharedReference),
          ref == null ? null : ref.getClass().getName());
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