http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
class javax.xml.datatype.SecuritySupport$1 implements java.security.PrivilegedAction
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: javax.xml.datatype.SecuritySupport$1
  super_class: java.lang.Object
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // javax.xml.datatype.SecuritySupport$1 this
         0: .line 44
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // javax.xml.datatype.SecuritySupport$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Ljavax/xml/datatype/SecuritySupport$1;

  public java.lang.Object run();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=1
        start local 0 // javax.xml.datatype.SecuritySupport$1 this
         0: .line 46
            aconst_null
            astore 1 /* cl */
        start local 1 // java.lang.ClassLoader cl
         1: .line 48
            invokestatic java.lang.Thread.currentThread:()Ljava/lang/Thread;
            invokevirtual java.lang.Thread.getContextClassLoader:()Ljava/lang/ClassLoader;
            astore 1 /* cl */
         2: .line 49
            goto 4
      StackMap locals: javax.xml.datatype.SecuritySupport$1 java.lang.ClassLoader
      StackMap stack: java.lang.SecurityException
         3: pop
         4: .line 50
      StackMap locals:
      StackMap stack:
            aload 1 /* cl */
            areturn
        end local 1 // java.lang.ClassLoader cl
        end local 0 // javax.xml.datatype.SecuritySupport$1 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Ljavax/xml/datatype/SecuritySupport$1;
            1    5     1    cl  Ljava/lang/ClassLoader;
      Exception table:
        from    to  target  type
           1     2       3  Class java.lang.SecurityException
}
SourceFile: "SecuritySupport.java"
EnclosingMethod: javax.xml.datatype.SecuritySupport.getContextClassLoader:()Ljava/lang/ClassLoader;
NestHost: javax.xml.datatype.SecuritySupport
InnerClasses:
  javax.xml.datatype.SecuritySupport$1