refactor: Add default error messages if it's not parsed from the response

Author: lpatino10

src/main/java/com/ibm/cloud/sdk/core/service/exception/BadRequestException.java

@@ -31,6 +31,9 @@ public class BadRequestException extends ServiceResponseException {
    */
   public BadRequestException(Response response) {
     super(HttpStatus.BAD_REQUEST, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Bad request");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/ConflictException.java

@@ -33,6 +33,9 @@ public class ConflictException extends ServiceResponseException {
    */
   public ConflictException(Response response) {
     super(HttpStatus.CONFLICT, response);
+    if (this.getMessage() == null) {
+      this.setMessage("");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/ForbiddenException.java

@@ -33,6 +33,9 @@ public class ForbiddenException extends ServiceResponseException {
    */
   public ForbiddenException(Response response) {
     super(HttpStatus.FORBIDDEN, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Forbidden: Service refused the request");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/InternalServerErrorException.java

@@ -33,6 +33,9 @@ public class InternalServerErrorException extends ServiceResponseException {
    */
   public InternalServerErrorException(Response response) {
     super(HttpStatus.INTERNAL_SERVER_ERROR, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Internal server error");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/NotFoundException.java

@@ -33,6 +33,9 @@ public class NotFoundException extends ServiceResponseException {
    */
   public NotFoundException(Response response) {
     super(HttpStatus.NOT_FOUND, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Not found");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/RequestTooLargeException.java

@@ -33,6 +33,9 @@ public class RequestTooLargeException extends ServiceResponseException {
    */
   public RequestTooLargeException(Response response) {
     super(HttpStatus.REQUEST_TOO_LONG, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Request too large: The request entity is larger than the server is able to process");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/ServiceResponseException.java

@@ -90,6 +90,15 @@ public String getMessage() {
     return message;
   }
 
+  /**
+   * Sets the error message.
+   *
+   * @param message the error message
+   */
+  protected void setMessage(String message) {
+    this.message = message;
+  }
+
   /**
    * Gets the headers.
    *

src/main/java/com/ibm/cloud/sdk/core/service/exception/ServiceUnavailableException.java

@@ -33,6 +33,9 @@ public class ServiceUnavailableException extends ServiceResponseException {
    */
   public ServiceUnavailableException(Response response) {
     super(HttpStatus.SERVICE_UNAVAILABLE, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Service unavailable");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/TooManyRequestsException.java

@@ -32,6 +32,9 @@ public class TooManyRequestsException extends ServiceResponseException {
    */
   public TooManyRequestsException(Response response) {
     super(TOO_MANY_REQUESTS, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Too many requests");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/UnauthorizedException.java

@@ -33,6 +33,9 @@ public class UnauthorizedException extends ServiceResponseException {
    */
   public UnauthorizedException(Response response) {
     super(HttpStatus.UNAUTHORIZED, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Unauthorized: Access is denied due to invalid credentials. Tip: Did you set the endpoint?");
+    }
   }
 
 }

src/main/java/com/ibm/cloud/sdk/core/service/exception/UnsupportedException.java

@@ -33,6 +33,9 @@ public class UnsupportedException extends ServiceResponseException {
    */
   public UnsupportedException(Response response) {
     super(HttpStatus.UNSUPPORTED_MEDIA_TYPE, response);
+    if (this.getMessage() == null) {
+      this.setMessage("Unsupported media type");
+    }
   }
 
 }