Remove (merely) usage of Commons Lang3

Author: runeflobakk

NOTICE

@@ -9,7 +9,6 @@ Licensed under Apache 2 - http://www.apache.org/licenses/LICENSE-2.0.html
 This software includes third party software subject to the following licenses:
 
   Apache Commons Codec under Apache License, Version 2.0
-  Apache Commons Lang under Apache License, Version 2.0
   Apache HttpClient under Apache License, Version 2.0
   Apache HttpComponents Core HTTP/1.1 under Apache License, Version 2.0
   Apache HttpComponents Core HTTP/2 under Apache License, Version 2.0

lib/NOTICE

@@ -9,7 +9,6 @@ Licensed under Apache 2 - http://www.apache.org/licenses/LICENSE-2.0.html
 This software includes third party software subject to the following licenses:
 
   Apache Commons Codec under Apache License, Version 2.0
-  Apache Commons Lang under Apache License, Version 2.0
   Apache HttpClient under Apache License, Version 2.0
   Apache HttpComponents Core HTTP/1.1 under Apache License, Version 2.0
   Apache HttpComponents Core HTTP/2 under Apache License, Version 2.0

lib/pom.xml

@@ -86,11 +86,6 @@
             <artifactId>commons-codec</artifactId>
             <version>1.15</version>
         </dependency>
-        <dependency>
-            <groupId>org.apache.commons</groupId>
-            <artifactId>commons-lang3</artifactId>
-            <version>3.12.0</version>
-        </dependency>
 
         <dependency>
             <groupId>org.slf4j</groupId>

lib/src/main/java/no/digipost/signature/client/core/internal/ClientExceptionMapper.java

@@ -7,7 +7,6 @@
 import no.digipost.signature.client.core.internal.http.ResponseStatus;
 import no.digipost.signature.client.core.internal.http.StatusCode;
 import no.digipost.signature.client.core.internal.xml.Marshalling;
-import org.apache.commons.lang3.StringUtils;
 import org.apache.hc.core5.http.ClassicHttpResponse;
 import org.apache.hc.core5.http.ContentType;
 import org.apache.hc.core5.http.HttpHeaders;
@@ -63,7 +62,7 @@ static XMLError extractError(ClassicHttpResponse response) {
                 }
                 throw new UnexpectedResponseException(
                         HttpHeaders.CONTENT_TYPE + " " + contentType.map(ContentType::getMimeType).orElse("unknown") + ": " +
-                        Optional.ofNullable(errorAsString).filter(StringUtils::isNoneBlank).orElse("<no content in response>"),
+                        Optional.ofNullable(errorAsString).filter(s -> !s.trim().isEmpty()).orElse("<no content in response>"),
                         ResponseStatus.fromHttpResponse(response).get(), StatusCode.OK);
             }
             return error;