src/main/java/com/cedarsoftware/util/io/JsonWriter.java
protected String getSubstituteTypeNameIfExists(String typeName)
    {
        if (typeNameMap == null)
        {
            return null;
        }
        return typeNameMap.get(typeName);
    }
protected String getSubstituteTypeNameIfExists(String typeName)
    {
        if (typeNameMap == null)
        {
            return null;
        }
        return typeNameMap.get(typeName);
    }
Used internally to substitute type names.  For example, 'java.util.ArrayList, could have a substitute
type name of 'alist'.  Set substitute type names using the TYPE_NAME_MAP option.
@param typeName String name of type to substitute.
@return String substituted name, or null if there is no substitute.