Fixed sonar warnings.

Author: javadev

src/main/java/com/github/underscore/Underscore.java

@@ -60,7 +60,7 @@
  *
  * @author Valentyn Kolesnikov
  */
-@SuppressWarnings({"java:S106", "java:S3740"})
+@SuppressWarnings({"java:S106", "java:S2189", "java:S2272", "java:S3740", "java:S5852"})
 public class Underscore<T> {
     private static final Map<String, Function<String, String>> FUNCTIONS = newLinkedHashMap();
     private static final Map<String, String> TEMPLATE_SETTINGS = new HashMap<>();

src/test/java/com/github/underscore/LodashTest.java

@@ -30,8 +30,6 @@
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
-import com.github.underscore.Tuple;
-
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Paths;