Refactored Swagger2MarkupConfigBuilder

Author: Robert Winkler

src/main/java/io/github/swagger2markup/Swagger2MarkupProperties.java

@@ -231,7 +231,7 @@ public Optional<Path> getPath(String key) {
      * @throws IllegalStateException if the value cannot be mapped to an array of strings
      */
     public List<Path> getPathList(String key) {
-        List<Path> pathList = new ArrayList<Path>();
+        List<Path> pathList = new ArrayList<>();
 
         try {
             String[] stringList = configuration.getStringArray(key);

src/main/java/io/github/swagger2markup/builder/Swagger2MarkupConfigBuilder.java

@@ -113,12 +113,9 @@ public Swagger2MarkupConfigBuilder(Configuration configuration) {
         config.headerPattern = headerPattern.orElse(null);
 
         config.listDelimiterEnabled = swagger2MarkupProperties.getBoolean(LIST_DELIMITER_ENABLED, false);
-        OptionalInt delimiter = swagger2MarkupProperties.getString(LIST_DELIMITER, "").chars().findFirst();
-        if (delimiter.isPresent()) {
-            config.listDelimiter = Character.valueOf((char)delimiter.getAsInt());
-        }
+        config.listDelimiter = swagger2MarkupProperties.getString(LIST_DELIMITER, ",").charAt(0);
 
-        if (config.listDelimiterEnabled && config.listDelimiter != null && configuration instanceof AbstractConfiguration) {
+        if (config.listDelimiterEnabled && configuration instanceof AbstractConfiguration) {
             ((AbstractConfiguration)configuration).setListDelimiterHandler(new DefaultListDelimiterHandler(config.listDelimiter));
         }