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. 
final class com.google.common.io.Closer$LoggingSuppressor implements com.google.common.io.Closer$Suppressor
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.google.common.io.Closer$LoggingSuppressor
  super_class: java.lang.Object
{
  static final com.google.common.io.Closer$LoggingSuppressor INSTANCE;
    descriptor: Lcom/google/common/io/Closer$LoggingSuppressor;
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 244
            new com.google.common.io.Closer$LoggingSuppressor
            dup
            invokespecial com.google.common.io.Closer$LoggingSuppressor.<init>:()V
            putstatic com.google.common.io.Closer$LoggingSuppressor.INSTANCE:Lcom/google/common/io/Closer$LoggingSuppressor;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.io.Closer$LoggingSuppressor this
         0: .line 242
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.io.Closer$LoggingSuppressor this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/io/Closer$LoggingSuppressor;

  public void suppress(java.io.Closeable, java.lang.Throwable, java.lang.Throwable);
    descriptor: (Ljava/io/Closeable;Ljava/lang/Throwable;Ljava/lang/Throwable;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=4, args_size=4
        start local 0 // com.google.common.io.Closer$LoggingSuppressor this
        start local 1 // java.io.Closeable closeable
        start local 2 // java.lang.Throwable thrown
        start local 3 // java.lang.Throwable suppressed
         0: .line 249
            getstatic com.google.common.io.Closeables.logger:Ljava/util/logging/Logger;
         1: .line 250
            getstatic java.util.logging.Level.WARNING:Ljava/util/logging/Level;
            new java.lang.StringBuilder
            dup
            ldc "Suppressing exception thrown when closing "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* closeable */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            aload 3 /* suppressed */
         2: .line 249
            invokevirtual java.util.logging.Logger.log:(Ljava/util/logging/Level;Ljava/lang/String;Ljava/lang/Throwable;)V
         3: .line 251
            return
        end local 3 // java.lang.Throwable suppressed
        end local 2 // java.lang.Throwable thrown
        end local 1 // java.io.Closeable closeable
        end local 0 // com.google.common.io.Closer$LoggingSuppressor this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lcom/google/common/io/Closer$LoggingSuppressor;
            0    4     1   closeable  Ljava/io/Closeable;
            0    4     2      thrown  Ljava/lang/Throwable;
            0    4     3  suppressed  Ljava/lang/Throwable;
    MethodParameters:
            Name  Flags
      closeable   
      thrown      
      suppressed  
}
SourceFile: "Closer.java"
NestHost: com.google.common.io.Closer
InnerClasses:
  final LoggingSuppressor = com.google.common.io.Closer$LoggingSuppressor 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.VisibleForTesting()