Add missing javadocs for sharpen configs

Author: Dmitry Radchuk

commons/src/sharpenconfig/java/com/itextpdf/commons/BCWrappersConfigurationUtils.java

@@ -25,9 +25,17 @@ This file is part of the iText (R) project.
 import sharpen.config.MappingConfigurator;
 import sharpen.config.MemberKind;
 
+/**
+ * Utility class for applying BC wrappers mappings.
+ */
 public class BCWrappersConfigurationUtils {
     private BCWrappersConfigurationUtils() {}
 
+    /**
+     * Applies mappings with custom wrappers for modules which use both bouncycastle and bouncycastle-fips.
+     *
+     * @param configurator {@link MappingConfigurator} instance in which mappings will be added
+     */
     public static void applyMappingConfiguration(MappingConfigurator configurator) {
         configurator.mapMethod("java.security.cert.X509Certificate.getSerialNumber", "GetSerialNumber");
         configurator.mapMethod("java.security.cert.X509Certificate.getThisUpdate", "GetThisUpdate");

commons/src/sharpenconfig/java/com/itextpdf/commons/UseBCWrappersModuleOption.java

@@ -39,6 +39,11 @@ private UseBCWrappersModuleOption() {
                 "Enables BC wrappers configuration in commons");
     }
 
+    /**
+     * Gets the BC wrappers option instance.
+     *
+     * @return The {@code  UseBCWrappersModuleOption} option instance
+     */
     public static UseBCWrappersModuleOption getInstance() {
         return INSTANCE;
     }