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.util.concurrent.Internal
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: com.google.common.util.concurrent.Internal
  super_class: java.lang.Object
{
  static long toNanosSaturated(java.time.Duration);
    descriptor: (Ljava/time/Duration;)J
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // java.time.Duration duration
         0: .line 35
            aload 0 /* duration */
            invokevirtual java.time.Duration.toNanos:()J
         1: lreturn
         2: .line 36
      StackMap locals:
      StackMap stack: java.lang.ArithmeticException
            pop
         3: .line 37
            aload 0 /* duration */
            invokevirtual java.time.Duration.isNegative:()Z
            ifeq 4
            ldc -9223372036854775808
            goto 5
      StackMap locals:
      StackMap stack:
         4: ldc 9223372036854775807
      StackMap locals:
      StackMap stack: long
         5: lreturn
        end local 0 // java.time.Duration duration
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    6     0  duration  Ljava/time/Duration;
      Exception table:
        from    to  target  type
           0     1       2  Class java.lang.ArithmeticException
    MethodParameters:
          Name  Flags
      duration  

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.util.concurrent.Internal this
         0: .line 41
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.google.common.util.concurrent.Internal this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/util/concurrent/Internal;
}
SourceFile: "Internal.java"
    RuntimeInvisibleAnnotations: 
      com.google.common.annotations.GwtIncompatible()