private boolean matches(ProfileStackNode node) {
        return Objects.equal(this.codeSignature, node.codeSignature);
    }
calculate duration to {@link ProfileStackElement#getDurationChildExcluded()}, expends on {@link
#calculateDuration(ProfileStackElement)}
oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/profiling/trace/analyze/ProfileStackNode.java