Program: 23412
Project: 23412
Buggy source:
private void renderTarget(StringBuilder b,StructureMapGroupRuleTargetComponent rt) throws FHIRException {
  if (rt.hasContext()) {
    b.append(rt.getContext());
    if (rt.hasElement()) {
      b.append('.');
      b.append(rt.getElement());
    }
  }
  if (rt.hasTransform()) {
    if (rt.hasContext())     b.append("String_Node_Str");
    if (rt.getTransform() == StructureMapTransform.COPY && rt.getParameter().size() == 1) {
      renderTransformParam(b,rt.getParameter().get(0));
    }
 else     if (rt.getTransform() == StructureMapTransform.EVALUATE && rt.getParameter().size() == 1) {
      b.append("String_Node_Str");
      b.append(((StringType)rt.getParameter().get(0).getValue()).asStringValue());
      b.append("String_Node_Str");
    }
 else     if (rt.getTransform() == StructureMapTransform.EVALUATE && rt.getParameter().size() == 2) {
      b.append(rt.getTransform().toCode());
      b.append("String_Node_Str");
      b.append(((IdType)rt.getParameter().get(0).getValue()).asStringValue());
      b.append(((StringType)rt.getParameter().get(1).getValue()).asStringValue());
      b.append("String_Node_Str");
    }
 else {
      b.append(rt.getTransform().toCode());
      b.append("String_Node_Str");
      boolean first=true;
      for (      StructureMapGroupRuleTargetParameterComponent rtp : rt.getParameter()) {
        if (first)         first=false;
 else         b.append("String_Node_Str");
        renderTransformParam(b,rtp);
      }
      b.append("String_Node_Str");
    }
  }
  if (rt.hasVariable()) {
    b.append("String_Node_Str");
    b.append(rt.getVariable());
  }
  for (  Enumeration<StructureMapListMode> lm : rt.getListMode()) {
    b.append("String_Node_Str");
    b.append(lm.getValue().toCode());
    if (lm.getValue() == StructureMapListMode.SHARE) {
      b.append("String_Node_Str");
      b.append(rt.getListRuleId());
    }
  }
}

Fixed version (ground truth):
private void renderTarget(StringBuilder b,StructureMapGroupRuleTargetComponent rt) throws FHIRException {
  if (rt.hasContext()) {
    if (rt.getContextType() == StructureMapContextType.TYPE)     b.append("String_Node_Str");
    b.append(rt.getContext());
    if (rt.hasElement()) {
      b.append('.');
      b.append(rt.getElement());
    }
  }
  if (rt.hasTransform()) {
    if (rt.hasContext())     b.append("String_Node_Str");
    if (rt.getTransform() == StructureMapTransform.COPY && rt.getParameter().size() == 1) {
      renderTransformParam(b,rt.getParameter().get(0));
    }
 else     if (rt.getTransform() == StructureMapTransform.EVALUATE && rt.getParameter().size() == 1) {
      b.append("String_Node_Str");
      b.append(((StringType)rt.getParameter().get(0).getValue()).asStringValue());
      b.append("String_Node_Str");
    }
 else     if (rt.getTransform() == StructureMapTransform.EVALUATE && rt.getParameter().size() == 2) {
      b.append(rt.getTransform().toCode());
      b.append("String_Node_Str");
      b.append(((IdType)rt.getParameter().get(0).getValue()).asStringValue());
      b.append(((StringType)rt.getParameter().get(1).getValue()).asStringValue());
      b.append("String_Node_Str");
    }
 else {
      b.append(rt.getTransform().toCode());
      b.append("String_Node_Str");
      boolean first=true;
      for (      StructureMapGroupRuleTargetParameterComponent rtp : rt.getParameter()) {
        if (first)         first=false;
 else         b.append("String_Node_Str");
        renderTransformParam(b,rtp);
      }
      b.append("String_Node_Str");
    }
  }
  if (rt.hasVariable()) {
    b.append("String_Node_Str");
    b.append(rt.getVariable());
  }
  for (  Enumeration<StructureMapListMode> lm : rt.getListMode()) {
    b.append("String_Node_Str");
    b.append(lm.getValue().toCode());
    if (lm.getValue() == StructureMapListMode.SHARE) {
      b.append("String_Node_Str");
      b.append(rt.getListRuleId());
    }
  }
}