https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
public final class com.google.common.io.Closer implements java.io.Closeable
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.google.common.io.Closer
  super_class: java.lang.Object
{
  private static final com.google.common.io.Closer$Suppressor SUPPRESSOR;
    descriptor: Lcom/google/common/io/Closer$Suppressor;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  final com.google.common.io.Closer$Suppressor suppressor;
    descriptor: Lcom/google/common/io/Closer$Suppressor;
    flags: (0x0010) ACC_FINAL
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.VisibleForTesting()

  private final java.util.Deque<java.io.Closeable> stack;
    descriptor: Ljava/util/Deque;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL
    Signature: Ljava/util/Deque<Ljava/io/Closeable;>;

  private java.lang.Throwable thrown;
    descriptor: Ljava/lang/Throwable;
    flags: (0x0002) ACC_PRIVATE
    RuntimeVisibleTypeAnnotations: 
      FIELD
        org.checkerframework.checker.nullness.qual.Nullable()

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 95
            invokestatic com.google.common.io.Closer$SuppressingSuppressor.isAvailable:()Z
            ifeq 2
         1: .line 96
            getstatic com.google.common.io.Closer$SuppressingSuppressor.INSTANCE:Lcom/google/common/io/Closer$SuppressingSuppressor;
            goto 3
         2: .line 97
      StackMap locals:
      StackMap stack:
            getstatic com.google.common.io.Closer$LoggingSuppressor.INSTANCE:Lcom/google/common/io/Closer$LoggingSuppressor;
         3: .line 94
      StackMap locals:
      StackMap stack: com.google.common.io.Closer$Suppressor
            putstatic com.google.common.io.Closer.SUPPRESSOR:Lcom/google/common/io/Closer$Suppressor;
         4: .line 97
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static com.google.common.io.Closer create();
    descriptor: ()Lcom/google/common/io/Closer;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 101
            new com.google.common.io.Closer
            dup
            getstatic com.google.common.io.Closer.SUPPRESSOR:Lcom/google/common/io/Closer$Suppressor;
            invokespecial com.google.common.io.Closer.<init>:(Lcom/google/common/io/Closer$Suppressor;)V
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>(com.google.common.io.Closer$Suppressor);
    descriptor: (Lcom/google/common/io/Closer$Suppressor;)V
    flags: (0x0000) 
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // com.google.common.io.Closer this
        start local 1 // com.google.common.io.Closer$Suppressor suppressor
         0: .line 111
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 107
            aload 0 /* this */
            new java.util.ArrayDeque
            dup
            iconst_4
            invokespecial java.util.ArrayDeque.<init>:(I)V
            putfield com.google.common.io.Closer.stack:Ljava/util/Deque;
         2: .line 112
            aload 0 /* this */
            aload 1 /* suppressor */
            invokestatic com.google.common.base.Preconditions.checkNotNull:(Ljava/lang/Object;)Ljava/lang/Object;
            checkcast com.google.common.io.Closer$Suppressor
            putfield com.google.common.io.Closer.suppressor:Lcom/google/common/io/Closer$Suppressor;
         3: .line 113
            return
        end local 1 // com.google.common.io.Closer$Suppressor suppressor
        end local 0 // com.google.common.io.Closer this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lcom/google/common/io/Closer;
            0    4     1  suppressor  Lcom/google/common/io/Closer$Suppressor;
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.VisibleForTesting()
    RuntimeInvisibleTypeAnnotations: 
      METHOD_RETURN
        com.google.common.annotations.VisibleForTesting()
    MethodParameters:
            Name  Flags
      suppressor  

  public <C extends java.io.Closeable> C register();
    descriptor: (Ljava/io/Closeable;)Ljava/io/Closeable;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // com.google.common.io.Closer this
        start local 1 // java.io.Closeable closeable
         0: .line 124
            aload 1 /* closeable */
            ifnull 2
         1: .line 125
            aload 0 /* this */
            getfield com.google.common.io.Closer.stack:Ljava/util/Deque;
            aload 1 /* closeable */
            invokeinterface java.util.Deque.addFirst:(Ljava/lang/Object;)V
         2: .line 128
      StackMap locals:
      StackMap stack:
            aload 1 /* closeable */
            areturn
        end local 1 // java.io.Closeable closeable
        end local 0 // com.google.common.io.Closer this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    3     0       this  Lcom/google/common/io/Closer;
            0    3     1  closeable  TC;
    Signature: <C::Ljava/io/Closeable;>(TC;)TC;
    RuntimeInvisibleAnnotations: 
      com.google.errorprone.annotations.CanIgnoreReturnValue()
    RuntimeVisibleTypeAnnotations: 
      METHOD_FORMAL_PARAMETER
        org.checkerframework.checker.nullness.qual.Nullable()
    MethodParameters:
           Name  Flags
      closeable  

  public java.lang.RuntimeException rethrow(java.lang.Throwable);
    descriptor: (Ljava/lang/Throwable;)Ljava/lang/RuntimeException;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // com.google.common.io.Closer this
        start local 1 // java.lang.Throwable e
         0: .line 145
            aload 1 /* e */
            invokestatic com.google.common.base.Preconditions.checkNotNull:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         1: .line 146
            aload 0 /* this */
            aload 1 /* e */
            putfield com.google.common.io.Closer.thrown:Ljava/lang/Throwable;
         2: .line 147
            aload 1 /* e */
            ldc Ljava/io/IOException;
            invokestatic com.google.common.base.Throwables.propagateIfPossible:(Ljava/lang/Throwable;Ljava/lang/Class;)V
         3: .line 148
            new java.lang.RuntimeException
            dup
            aload 1 /* e */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 1 // java.lang.Throwable e
        end local 0 // com.google.common.io.Closer this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lcom/google/common/io/Closer;
            0    4     1     e  Ljava/lang/Throwable;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      e     

  public <X extends java.lang.Exception> java.lang.RuntimeException rethrow(java.lang.Throwable, java.lang.Class<X>) throws java.io.IOException, X;
    descriptor: (Ljava/lang/Throwable;Ljava/lang/Class;)Ljava/lang/RuntimeException;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // com.google.common.io.Closer this
        start local 1 // java.lang.Throwable e
        start local 2 // java.lang.Class declaredType
         0: .line 167
            aload 1 /* e */
            invokestatic com.google.common.base.Preconditions.checkNotNull:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         1: .line 168
            aload 0 /* this */
            aload 1 /* e */
            putfield com.google.common.io.Closer.thrown:Ljava/lang/Throwable;
         2: .line 169
            aload 1 /* e */
            ldc Ljava/io/IOException;
            invokestatic com.google.common.base.Throwables.propagateIfPossible:(Ljava/lang/Throwable;Ljava/lang/Class;)V
         3: .line 170
            aload 1 /* e */
            aload 2 /* declaredType */
            invokestatic com.google.common.base.Throwables.propagateIfPossible:(Ljava/lang/Throwable;Ljava/lang/Class;)V
         4: .line 171
            new java.lang.RuntimeException
            dup
            aload 1 /* e */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 2 // java.lang.Class declaredType
        end local 1 // java.lang.Throwable e
        end local 0 // com.google.common.io.Closer this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    5     0          this  Lcom/google/common/io/Closer;
            0    5     1             e  Ljava/lang/Throwable;
            0    5     2  declaredType  Ljava/lang/Class<TX;>;
    Exceptions:
      throws java.io.IOException, java.lang.Exception
    Signature: <X:Ljava/lang/Exception;>(Ljava/lang/Throwable;Ljava/lang/Class<TX;>;)Ljava/lang/RuntimeException;^Ljava/io/IOException;^TX;
    MethodParameters:
              Name  Flags
      e             
      declaredType  

  public <X1 extends java.lang.Exception, X2 extends java.lang.Exception> java.lang.RuntimeException rethrow(java.lang.Throwable, java.lang.Class<X1>, java.lang.Class<X2>) throws java.io.IOException, X1, X2;
    descriptor: (Ljava/lang/Throwable;Ljava/lang/Class;Ljava/lang/Class;)Ljava/lang/RuntimeException;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=4, args_size=4
        start local 0 // com.google.common.io.Closer this
        start local 1 // java.lang.Throwable e
        start local 2 // java.lang.Class declaredType1
        start local 3 // java.lang.Class declaredType2
         0: .line 191
            aload 1 /* e */
            invokestatic com.google.common.base.Preconditions.checkNotNull:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         1: .line 192
            aload 0 /* this */
            aload 1 /* e */
            putfield com.google.common.io.Closer.thrown:Ljava/lang/Throwable;
         2: .line 193
            aload 1 /* e */
            ldc Ljava/io/IOException;
            invokestatic com.google.common.base.Throwables.propagateIfPossible:(Ljava/lang/Throwable;Ljava/lang/Class;)V
         3: .line 194
            aload 1 /* e */
            aload 2 /* declaredType1 */
            aload 3 /* declaredType2 */
            invokestatic com.google.common.base.Throwables.propagateIfPossible:(Ljava/lang/Throwable;Ljava/lang/Class;Ljava/lang/Class;)V
         4: .line 195
            new java.lang.RuntimeException
            dup
            aload 1 /* e */
            invokespecial java.lang.RuntimeException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 3 // java.lang.Class declaredType2
        end local 2 // java.lang.Class declaredType1
        end local 1 // java.lang.Throwable e
        end local 0 // com.google.common.io.Closer this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    5     0           this  Lcom/google/common/io/Closer;
            0    5     1              e  Ljava/lang/Throwable;
            0    5     2  declaredType1  Ljava/lang/Class<TX1;>;
            0    5     3  declaredType2  Ljava/lang/Class<TX2;>;
    Exceptions:
      throws java.io.IOException, java.lang.Exception, java.lang.Exception
    Signature: <X1:Ljava/lang/Exception;X2:Ljava/lang/Exception;>(Ljava/lang/Throwable;Ljava/lang/Class<TX1;>;Ljava/lang/Class<TX2;>;)Ljava/lang/RuntimeException;^Ljava/io/IOException;^TX1;^TX2;
    MethodParameters:
               Name  Flags
      e              
      declaredType1  
      declaredType2  

  public void close();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=4, args_size=1
        start local 0 // com.google.common.io.Closer this
         0: .line 207
            aload 0 /* this */
            getfield com.google.common.io.Closer.thrown:Ljava/lang/Throwable;
            astore 1 /* throwable */
        start local 1 // java.lang.Throwable throwable
         1: .line 210
            goto 10
         2: .line 211
      StackMap locals: java.lang.Throwable
      StackMap stack:
            aload 0 /* this */
            getfield com.google.common.io.Closer.stack:Ljava/util/Deque;
            invokeinterface java.util.Deque.removeFirst:()Ljava/lang/Object;
            checkcast java.io.Closeable
            astore 2 /* closeable */
        start local 2 // java.io.Closeable closeable
         3: .line 213
            aload 2 /* closeable */
            invokeinterface java.io.Closeable.close:()V
         4: .line 214
            goto 10
      StackMap locals: com.google.common.io.Closer java.lang.Throwable java.io.Closeable
      StackMap stack: java.lang.Throwable
         5: astore 3 /* e */
        start local 3 // java.lang.Throwable e
         6: .line 215
            aload 1 /* throwable */
            ifnonnull 9
         7: .line 216
            aload 3 /* e */
            astore 1 /* throwable */
         8: .line 217
            goto 10
         9: .line 218
      StackMap locals: java.lang.Throwable
      StackMap stack:
            aload 0 /* this */
            getfield com.google.common.io.Closer.suppressor:Lcom/google/common/io/Closer$Suppressor;
            aload 2 /* closeable */
            aload 1 /* throwable */
            aload 3 /* e */
            invokeinterface com.google.common.io.Closer$Suppressor.suppress:(Ljava/io/Closeable;Ljava/lang/Throwable;Ljava/lang/Throwable;)V
        end local 3 // java.lang.Throwable e
        end local 2 // java.io.Closeable closeable
        10: .line 210
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield com.google.common.io.Closer.stack:Ljava/util/Deque;
            invokeinterface java.util.Deque.isEmpty:()Z
            ifeq 2
        11: .line 223
            aload 0 /* this */
            getfield com.google.common.io.Closer.thrown:Ljava/lang/Throwable;
            ifnonnull 14
            aload 1 /* throwable */
            ifnull 14
        12: .line 224
            aload 1 /* throwable */
            ldc Ljava/io/IOException;
            invokestatic com.google.common.base.Throwables.propagateIfPossible:(Ljava/lang/Throwable;Ljava/lang/Class;)V
        13: .line 225
            new java.lang.AssertionError
            dup
            aload 1 /* throwable */
            invokespecial java.lang.AssertionError.<init>:(Ljava/lang/Object;)V
            athrow
        14: .line 227
      StackMap locals:
      StackMap stack:
            return
        end local 1 // java.lang.Throwable throwable
        end local 0 // com.google.common.io.Closer this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   15     0       this  Lcom/google/common/io/Closer;
            1   15     1  throwable  Ljava/lang/Throwable;
            3   10     2  closeable  Ljava/io/Closeable;
            6   10     3          e  Ljava/lang/Throwable;
      Exception table:
        from    to  target  type
           3     4       5  Class java.lang.Throwable
    Exceptions:
      throws java.io.IOException
}
SourceFile: "Closer.java"
NestMembers:
  com.google.common.io.Closer$LoggingSuppressor  com.google.common.io.Closer$SuppressingSuppressor  com.google.common.io.Closer$Suppressor
InnerClasses:
  final LoggingSuppressor = com.google.common.io.Closer$LoggingSuppressor of com.google.common.io.Closer
  final SuppressingSuppressor = com.google.common.io.Closer$SuppressingSuppressor of com.google.common.io.Closer
  abstract Suppressor = com.google.common.io.Closer$Suppressor of com.google.common.io.Closer
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.Beta()
      com.google.common.annotations.GwtIncompatible()