LPS-35415 Implement the existing PortletDataHandlerBoolean usage properly
LPS-35415 Implement missing references concept for embedded images
LPS-35415 Extend BasePortletExportImportTestCase to have a configurable environment for PortletDataHandlerBooleans testing
LPS-35415 Implement the parameter map generation
LPS-35415 1.) Namespace vs NameSpace. 2.) If the value is a boolean, expect it to be a boolean parameter.