warnings cleanup

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/datatype/guava/GuavaModule.java

@@ -60,7 +60,7 @@ public void setupModule(SetupContext context)
 
     /**
      * Configuration method that may be used to change configuration setting
-     * {@link #_cfgHandleAbsentAsNull}: enabling means that `Optional.absent()` values
+     * <code>_cfgHandleAbsentAsNull</code>: enabling means that `Optional.absent()` values
      * are handled like Java nulls (wrt filtering on serialization); disabling that
      * they are only treated as "empty" values, but not like native Java nulls.
      * Recommended setting for this value is `false`, for compatibility with other

src/main/java/com/fasterxml/jackson/datatype/guava/ser/GuavaOptionalBeanPropertyWriter.java

@@ -16,7 +16,7 @@ protected GuavaOptionalBeanPropertyWriter(BeanPropertyWriter base) {
     protected GuavaOptionalBeanPropertyWriter(BeanPropertyWriter base, PropertyName newName) {
         super(base, newName);
     }
-    
+
     // !!! TODO: in 2.7, no need to override
     @Override
     public BeanPropertyWriter rename(NameTransformer transformer) {

src/main/java/com/fasterxml/jackson/datatype/guava/ser/GuavaOptionalSerializer.java

@@ -84,9 +84,8 @@ public JsonSerializer<?> createContextual(SerializerProvider provider,
         if (ser == null) {
             // we'll have type parameter available due to GuavaTypeModifier making sure it is, so:
             boolean realType = !_referredType.hasRawClass(Object.class);
-            /* Can only assign serializer statically if the declared type is final,
-             * or if we are to use static typing (and type is not "untyped")
-             */
+            // Can only assign serializer statically if the declared type is final,
+            // or if we are to use static typing (and type is not "untyped")
             if (realType &&
                     (provider.isEnabled(MapperFeature.USE_STATIC_TYPING)
                     || _referredType.isFinal())) {
@@ -179,7 +178,7 @@ public void serializeWithType(Optional<?> opt,
     /* Introspection support
     /**********************************************************
      */
-    
+
     @Override
     public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint) throws JsonMappingException
     {

src/main/java/com/fasterxml/jackson/datatype/guava/ser/GuavaUnwrappingOptionalBeanPropertyWriter.java

@@ -13,7 +13,6 @@ public class GuavaUnwrappingOptionalBeanPropertyWriter extends UnwrappingBeanPro
     public GuavaUnwrappingOptionalBeanPropertyWriter(BeanPropertyWriter base,
             NameTransformer transformer) {
         super(base, transformer);
-System.err.println("Unwrap/opt: ctor 1");
     }
 
     protected GuavaUnwrappingOptionalBeanPropertyWriter(UnwrappingBeanPropertyWriter base,