http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
public class org.apache.fop.pdf.NullFilter extends org.apache.fop.pdf.PDFFilter
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.apache.fop.pdf.NullFilter
  super_class: org.apache.fop.pdf.PDFFilter
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.pdf.NullFilter this
         0: .line 29
            aload 0 /* this */
            invokespecial org.apache.fop.pdf.PDFFilter.<init>:()V
            return
        end local 0 // org.apache.fop.pdf.NullFilter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/pdf/NullFilter;

  public java.lang.String getName();
    descriptor: ()Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.pdf.NullFilter this
         0: .line 35
            ldc ""
            areturn
        end local 0 // org.apache.fop.pdf.NullFilter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/pdf/NullFilter;

  public org.apache.fop.pdf.PDFObject getDecodeParms();
    descriptor: ()Lorg/apache/fop/pdf/PDFObject;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.pdf.NullFilter this
         0: .line 42
            aconst_null
            areturn
        end local 0 // org.apache.fop.pdf.NullFilter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/pdf/NullFilter;

  public java.io.OutputStream applyFilter(java.io.OutputStream);
    descriptor: (Ljava/io/OutputStream;)Ljava/io/OutputStream;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // org.apache.fop.pdf.NullFilter this
        start local 1 // java.io.OutputStream out
         0: .line 49
            aload 1 /* out */
            areturn
        end local 1 // java.io.OutputStream out
        end local 0 // org.apache.fop.pdf.NullFilter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/pdf/NullFilter;
            0    1     1   out  Ljava/io/OutputStream;
    Exceptions:
      throws java.io.IOException
    MethodParameters:
      Name  Flags
      out   
}
SourceFile: "NullFilter.java"