private void incRecursion(int amount) {
    if (amount < 0) {
      Assert.assertTrue(recursion - amount >= 0,
          amount + " cannot be subtracted from recursion " + recursion);
    }
    recursion += amount;
  }
Increments or decrements recursion by the specified amount. Caller must synchronize on this
lock token.

@param amount the amount to inc or dec recursion by
geode-core/src/main/java/org/apache/geode/distributed/internal/locks/DLockToken.java