@Override
 public void renderTryCatch(StatementModel tryBlock, StatementModel catchBlock) {
   append("try {\n");
   indent();
   tryBlock.render(this);
   unindent();
   append("} catch(Exception e) {\n");
   indent();
   catchBlock.render(this);
   unindent();
   append("}\n");
 }
 @Override
 public void renderStatement(StatementModel statement) {
   statement.render(this);
   append("\n");
 }