feat: maps 400 status codes to BadRequestError class

CHANGELOG.md

@@ -3,6 +3,7 @@
 ## Next release
 
 - Adds new `RequestHook` and `ResponseHook` classes. (un)subscribe to them with the new `subscribeToRequestHook`, `subscribeToResponseHook`, `unsubscribeFromRequestHook`, or `unsubscribeFromResponseHook` methods of an `EasyPostClient`
+- Maps 400 status codes to the new `BadRequestError` class
 
 ## v6.7.0 (2023-06-06)
 

src/main/java/com/easypost/Constants.java

@@ -42,6 +42,7 @@ public abstract static class ErrorMessages {
     public abstract static class ErrorCodes {
         public static final int REDIRECT_CODE_BEGIN = 300;
         public static final int REDIRECT_CODE_END = 308;
+        public static final int BAD_REQUEST_ERROR = 400;
         public static final int UNAUTHORIZED_ERROR = 401;
         public static final int PAYMENT_ERROR = 402;
         public static final int FORBIDDEN_ERROR = 403;

src/main/java/com/easypost/exception/API/BadRequestError.java

@@ -0,0 +1,20 @@
+package com.easypost.exception.API;
+
+import java.util.List;
+
+import com.easypost.model.Error;
+import com.easypost.exception.APIException;
+
+public class BadRequestError extends APIException {
+    /**
+     * BadRequestError constructor.
+     *
+     * @param message    the exception message
+     * @param code       the exception code
+     * @param statusCode the exception status code
+     * @param errors     the errors array
+     */
+    public BadRequestError(final String message, final String code, final int statusCode, List<Error> errors) {
+        super(message, code, statusCode, errors);
+    }
+}