OZG-5808 afm: Rename method

semantik-adapter/src/main/java/de/ozgcloud/eingang/semantik/enginebased/afm/AfmAntragstellerMapper.java

@@ -96,11 +96,11 @@ class AfmAntragstellerMapper implements AfmEngineBasedMapper {
 		return Optional.ofNullable(formDataMap.get(ANTRAGSTELLER))
 				.or(() -> Optional.ofNullable(formDataMap.get(ANTRAGSTELLER_UPPERCASE)))
 				.map(Map.class::cast)
-				.map(this::mapValuesToString)
+				.map(this::mapValuesToStrings)
 				.map(LinkedHashMap::new);
 	}
 
-	private Map<String, String> mapValuesToString(Map<String, Object> map) {
+	private Map<String, String> mapValuesToStrings(Map<String, Object> map) {
 		return map.entrySet().stream()
 				.collect(Collectors.toMap(
 						Map.Entry::getKey,