StreamToLoop: unwrap negation and ternary; minor refactoring

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/streamToLoop/afterAllMatchNot.java

@@ -0,0 +1,17 @@
+// "Replace Stream API chain with loop" "true"
+
+import java.util.Arrays;
+import java.util.Objects;
+
+public class Main {
+  boolean test(String[] strings) {
+      for (String s : strings) {
+          if (Objects.nonNull(s)) {
+              if (!s.startsWith("xyz")) {
+                  return true;
+              }
+          }
+      }
+      return false;
+  }
+}