src/test/java/org/embulk/output/kintone/KintoneColumnOptionBuilder.java in embulk-output-kintone-0.4.1 vs src/test/java/org/embulk/output/kintone/KintoneColumnOptionBuilder.java in embulk-output-kintone-1.0.0

@@ -1,8 +1,7 @@
 package org.embulk.output.kintone;
 
-import java.util.Optional;
 import org.embulk.config.TaskSource;
 
 public class KintoneColumnOptionBuilder {
   private String type;
   private String fieldCode;
@@ -40,11 +39,11 @@
       public String getFieldCode() {
         return fieldCode;
       }
 
       @Override
-      public Optional<String> getTimezone() {
-        return Optional.ofNullable(timezone);
+      public String getTimezone() {
+        return timezone;
       }
 
       @Override
       public String getValueSeparator() {
         return valueSeparator;