Add convenience overload for ObjectMapper.constructType(TypeReference)

Author: cowtowncoder

src/main/java/com/fasterxml/jackson/databind/ObjectMapper.java

@@ -2161,6 +2161,17 @@ public JavaType constructType(Type t) {
         return _typeFactory.constructType(t);
     }
 
+    /**
+     * Convenience method for constructing {@link JavaType} out of given
+     * type reference.
+     *
+     * @since 2.12
+     */
+    public JavaType constructType(TypeReference<?> typeRef) {
+        _assertNotNull("typeRef", typeRef);
+        return _typeFactory.constructType(typeRef);
+    }
+
     /*
     /**********************************************************
     /* Configuration, deserialization