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 final class org.apache.fop.layoutmgr.BreakOpportunityHelper
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: org.apache.fop.layoutmgr.BreakOpportunityHelper
  super_class: java.lang.Object
{
  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.apache.fop.layoutmgr.BreakOpportunityHelper this
         0: .line 31
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // org.apache.fop.layoutmgr.BreakOpportunityHelper this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/apache/fop/layoutmgr/BreakOpportunityHelper;

  public static int getBreakBefore(org.apache.fop.layoutmgr.AbstractLayoutManager);
    descriptor: (Lorg/apache/fop/layoutmgr/AbstractLayoutManager;)I
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=4, args_size=1
        start local 0 // org.apache.fop.layoutmgr.AbstractLayoutManager layoutManager
         0: .line 41
            bipush 9
            istore 1 /* breakBefore */
        start local 1 // int breakBefore
         1: .line 42
            aload 0 /* layoutManager */
            invokevirtual org.apache.fop.layoutmgr.AbstractLayoutManager.getFObj:()Lorg/apache/fop/fo/FObj;
            instanceof org.apache.fop.fo.properties.BreakPropertySet
            ifeq 3
         2: .line 43
            aload 0 /* layoutManager */
            invokevirtual org.apache.fop.layoutmgr.AbstractLayoutManager.getFObj:()Lorg/apache/fop/fo/FObj;
            checkcast org.apache.fop.fo.properties.BreakPropertySet
            invokeinterface org.apache.fop.fo.properties.BreakPropertySet.getBreakBefore:()I
            istore 1 /* breakBefore */
         3: .line 45
      StackMap locals: int
      StackMap stack:
            aload 0 /* layoutManager */
            invokevirtual org.apache.fop.layoutmgr.AbstractLayoutManager.getChildLM:()Lorg/apache/fop/layoutmgr/LayoutManager;
            astore 2 /* childLM */
        start local 2 // org.apache.fop.layoutmgr.LayoutManager childLM
         4: .line 47
            aload 2 /* childLM */
            instanceof org.apache.fop.layoutmgr.BreakOpportunity
            ifeq 7
         5: .line 48
            aload 2 /* childLM */
            checkcast org.apache.fop.layoutmgr.BreakOpportunity
            astore 3 /* bo */
        start local 3 // org.apache.fop.layoutmgr.BreakOpportunity bo
         6: .line 49
            iload 1 /* breakBefore */
            aload 3 /* bo */
            invokeinterface org.apache.fop.layoutmgr.BreakOpportunity.getBreakBefore:()I
            invokestatic org.apache.fop.util.BreakUtil.compareBreakClasses:(II)I
            istore 1 /* breakBefore */
        end local 3 // org.apache.fop.layoutmgr.BreakOpportunity bo
         7: .line 51
      StackMap locals: org.apache.fop.layoutmgr.LayoutManager
      StackMap stack:
            iload 1 /* breakBefore */
            ireturn
        end local 2 // org.apache.fop.layoutmgr.LayoutManager childLM
        end local 1 // int breakBefore
        end local 0 // org.apache.fop.layoutmgr.AbstractLayoutManager layoutManager
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    8     0  layoutManager  Lorg/apache/fop/layoutmgr/AbstractLayoutManager;
            1    8     1    breakBefore  I
            4    8     2        childLM  Lorg/apache/fop/layoutmgr/LayoutManager;
            6    7     3             bo  Lorg/apache/fop/layoutmgr/BreakOpportunity;
    MethodParameters:
               Name  Flags
      layoutManager  
}
SourceFile: "BreakOpportunityHelper.java"