• Support multi vid_ref_expression in from clause.
• Support uuid in where clause.

issue from vesoft-inc/nebula-java#81

The doc on https://docs.janusgraph.org/basics/schema/#automatic-schema-maker says automatically created property key has data type Object.class

By default, implicitly created edge labels have multiplicity MULTI and implicitly created property keys have cardinality SINGLE and data type Object.class.

However, my testing shows that Default Schema Maker automatically infers the type of propert