Revert "Reverted changes in obsolete hipparchus-migration module."

This reverts commit a68a267.

Author: maisonobe

hipparchus-migration/src/main/java/org/hipparchus/migration/LocalizedMigrationFormats.java

@@ -22,11 +22,8 @@
 package org.hipparchus.migration;
 
 import java.util.Locale;
-import java.util.MissingResourceException;
-import java.util.ResourceBundle;
 
 import org.hipparchus.exception.Localizable;
-import org.hipparchus.exception.UTF8Control;
 
 /**
  * Enumeration for localized messages formats used in exceptions messages.
@@ -313,28 +310,8 @@ public String getSourceString() {
     /** {@inheritDoc} */
     @Override
     public String getLocalizedString(final Locale locale) {
-        try {
-            final String path = LocalizedMigrationFormats.class.getName().replaceAll("\\.", "/");
-            ResourceBundle bundle =
-                    ResourceBundle.getBundle("assets/" + path, locale, new UTF8Control());
-            if (bundle.getLocale().getLanguage().equals(locale.getLanguage())) {
-                final String translated = bundle.getString(name());
-                if ((translated != null) &&
-                    (translated.length() > 0) &&
-                    (!translated.toLowerCase(locale).contains("missing translation"))) {
-                    // the value of the resource is the translated format
-                    return translated;
-                }
-            }
-
-        } catch (MissingResourceException mre) { // NOPMD
-            // do nothing here
-        }
-
-        // either the locale is not supported or the resource is unknown
-        // don't translate and fall back to using the source format
-        return sourceFormat;
-
+        return getLocalizedString("assets/" + LocalizedMigrationFormats.class.getName().replaceAll("\\.", "/"),
+                                  name(), locale);
     }
 
 }

hipparchus-migration/src/test/java/org/hipparchus/migration/LocalizedMigrationFormatsTest.java

@@ -24,6 +24,10 @@
 
 
 import org.hipparchus.exception.LocalizedFormatsAbstractTest;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Assertions;
+
+import java.util.Locale;
 
 @Deprecated
 public class LocalizedMigrationFormatsTest extends LocalizedFormatsAbstractTest {
@@ -38,4 +42,9 @@ protected int getExpectedNumber() {
         return 82;
     }
 
+    @Test
+    public void testUnsupportedLocale() {
+        Assertions.assertEquals("Cardan angles singularity",
+                                LocalizedMigrationFormats.CARDAN_ANGLES_SINGULARITY.getLocalizedString(Locale.TRADITIONAL_CHINESE));
+    }
 }