I can't get StringTemplate to indent

Question

I have the following StringTemplate group

group RPInstr;

before(firstStat) ::= <<
<{<[beforeEnteringInstr(),firstStat]; anchor, separator="\n">}; anchor>
>>

beforeEnteringInstr() ::= "before();"

I am trying to make the first statement of a method to align with the instrumentation code ("before();"). However, what I am getting right now is something like this:

public  int method() {
  before();
System.out.println("testing");
  System.out.println("testing again");
}

What is the proper way to indent before(); and the next statement so I get the following?

public  int method() {
  before();
  System.out.println("testing");
  System.out.println("testing again");
}

Thanks in advance.

PS: the options that I am using in my grammar are the following

options {output=template; rewrite=true; backtrack=true; memoize=true;}

Answer 1

the expr in before(firstStat) is not indented. No reason for ST to indent then.