[Java] NARGS and cognitive metrics appear incorrect for simple methods #1250

Summary

With rust-code-analysis-cli 0.0.25, the Java NARGS and cognitive metrics appear incorrect for a minimal class with a one-parameter method and one if statement.

Reproduction

class MetricsFixture {
  int one(int x) { if (x > 0) return x; return 0; }
  int two() { return 0; }
}

Run:

rust-code-analysis-cli -p MetricsFixture.java --metrics --output-format json --output out

Expected

Based on the documented metric meanings, method one has one argument and cognitive complexity 1; method two has zero arguments and cognitive complexity 0.

Observed

In the function-space metrics, one reports NARGS functions_min/functions_max as 3 and cognitive min/max as 0. two reports NARGS functions_min/functions_max as 2 and cognitive min/max as 0.

This makes the Java NARGS and cognitive values unsuitable for simple per-function measurements. Please clarify whether these JSON fields have different semantics or whether the Java grammar/metric implementation needs correction.