WINDUP-171 Use a constant instead of "type"
WINDUP-171 Use a constant instead of "type"
Add SLF4J to modules to see at least some logging.
Comment
WINDUP-152  Add support for Map<String, String> in Frames to store in vertex'es properties.
Polish Map handler.
WINDUP-152  Support for Map<String, String>  - improvements, apply PR comments.