http://www.bouncycastle.org/java.html: The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5. 
class org.bouncycastle.asn1.DERFactory
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.bouncycastle.asn1.DERFactory
  super_class: java.lang.Object
{
  static final org.bouncycastle.asn1.DERSequence EMPTY_SEQUENCE;
    descriptor: Lorg/bouncycastle/asn1/DERSequence;
    flags: (0x0018) ACC_STATIC, ACC_FINAL

  static final org.bouncycastle.asn1.DERSet EMPTY_SET;
    descriptor: Lorg/bouncycastle/asn1/DERSet;
    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 5
            new org.bouncycastle.asn1.DERSequence
            dup
            invokespecial org.bouncycastle.asn1.DERSequence.<init>:()V
            putstatic org.bouncycastle.asn1.DERFactory.EMPTY_SEQUENCE:Lorg/bouncycastle/asn1/DERSequence;
         1: .line 6
            new org.bouncycastle.asn1.DERSet
            dup
            invokespecial org.bouncycastle.asn1.DERSet.<init>:()V
            putstatic org.bouncycastle.asn1.DERFactory.EMPTY_SET:Lorg/bouncycastle/asn1/DERSet;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.DERFactory this
         0: .line 3
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.bouncycastle.asn1.DERFactory this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/bouncycastle/asn1/DERFactory;

  static org.bouncycastle.asn1.DERSequence createSequence(org.bouncycastle.asn1.ASN1EncodableVector);
    descriptor: (Lorg/bouncycastle/asn1/ASN1EncodableVector;)Lorg/bouncycastle/asn1/DERSequence;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.ASN1EncodableVector v
         0: .line 10
            aload 0 /* v */
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.size:()I
            iconst_1
            if_icmpge 1
            getstatic org.bouncycastle.asn1.DERFactory.EMPTY_SEQUENCE:Lorg/bouncycastle/asn1/DERSequence;
            goto 2
      StackMap locals:
      StackMap stack:
         1: new org.bouncycastle.asn1.DERSequence
            dup
            aload 0 /* v */
            invokespecial org.bouncycastle.asn1.DERSequence.<init>:(Lorg/bouncycastle/asn1/ASN1EncodableVector;)V
      StackMap locals:
      StackMap stack: org.bouncycastle.asn1.DERSequence
         2: areturn
        end local 0 // org.bouncycastle.asn1.ASN1EncodableVector v
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0     v  Lorg/bouncycastle/asn1/ASN1EncodableVector;
    MethodParameters:
      Name  Flags
      v     

  static org.bouncycastle.asn1.DERSet createSet(org.bouncycastle.asn1.ASN1EncodableVector);
    descriptor: (Lorg/bouncycastle/asn1/ASN1EncodableVector;)Lorg/bouncycastle/asn1/DERSet;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.bouncycastle.asn1.ASN1EncodableVector v
         0: .line 15
            aload 0 /* v */
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.size:()I
            iconst_1
            if_icmpge 1
            getstatic org.bouncycastle.asn1.DERFactory.EMPTY_SET:Lorg/bouncycastle/asn1/DERSet;
            goto 2
      StackMap locals:
      StackMap stack:
         1: new org.bouncycastle.asn1.DERSet
            dup
            aload 0 /* v */
            invokespecial org.bouncycastle.asn1.DERSet.<init>:(Lorg/bouncycastle/asn1/ASN1EncodableVector;)V
      StackMap locals:
      StackMap stack: org.bouncycastle.asn1.DERSet
         2: areturn
        end local 0 // org.bouncycastle.asn1.ASN1EncodableVector v
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0     v  Lorg/bouncycastle/asn1/ASN1EncodableVector;
    MethodParameters:
      Name  Flags
      v     

  static org.bouncycastle.asn1.DERSet createSet(org.bouncycastle.asn1.ASN1EncodableVector, boolean);
    descriptor: (Lorg/bouncycastle/asn1/ASN1EncodableVector;Z)Lorg/bouncycastle/asn1/DERSet;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.bouncycastle.asn1.ASN1EncodableVector v
        start local 1 // boolean needsSorting
         0: .line 20
            aload 0 /* v */
            invokevirtual org.bouncycastle.asn1.ASN1EncodableVector.size:()I
            iconst_1
            if_icmpge 1
            getstatic org.bouncycastle.asn1.DERFactory.EMPTY_SET:Lorg/bouncycastle/asn1/DERSet;
            goto 2
      StackMap locals:
      StackMap stack:
         1: new org.bouncycastle.asn1.DERSet
            dup
            aload 0 /* v */
            iload 1 /* needsSorting */
            invokespecial org.bouncycastle.asn1.DERSet.<init>:(Lorg/bouncycastle/asn1/ASN1EncodableVector;Z)V
      StackMap locals:
      StackMap stack: org.bouncycastle.asn1.DERSet
         2: areturn
        end local 1 // boolean needsSorting
        end local 0 // org.bouncycastle.asn1.ASN1EncodableVector v
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    3     0             v  Lorg/bouncycastle/asn1/ASN1EncodableVector;
            0    3     1  needsSorting  Z
    MethodParameters:
              Name  Flags
      v             
      needsSorting  
}
SourceFile: "DERFactory.java"