Better parameters null checks in Input class (#211)

Author: vojtechhabarta

typescript-generator-core/src/main/java/cz/habarta/typescript/generator/Input.java

@@ -25,14 +25,17 @@ public List<SourceType<Type>> getSourceTypes() {
     }
 
     public static Input from(Type... types) {
+        Objects.requireNonNull(types, "types");
         final List<SourceType<Type>> sourceTypes = new ArrayList<>();
         for (Type type : types) {
             sourceTypes.add(new SourceType<>(type));
         }
         return new Input(sourceTypes);
     }
 
-    public static Input fromClassNamesAndJaxrsApplication(List<String> classNames, List<String> classNamePatterns, String jaxrsApplicationClassName, boolean automaticJaxrsApplication, Predicate<String> isClassNameExcluded, URLClassLoader classLoader, boolean debug) {
+    public static Input fromClassNamesAndJaxrsApplication(List<String> classNames, List<String> classNamePatterns, String jaxrsApplicationClassName,
+            boolean automaticJaxrsApplication, Predicate<String> isClassNameExcluded, URLClassLoader classLoader, boolean debug) {
+        Objects.requireNonNull(classLoader, "classLoader");
         final ClassLoader originalContextClassLoader = Thread.currentThread().getContextClassLoader();
         try {
             Thread.currentThread().setContextClassLoader(classLoader);