public interface FormatSchema
JsonParser and JsonGenerator implementations to further
 specify structure of expected format.
 Basic JSON-based parsers and generators do not use schemas, but some data
 formats (like many binary data formats like Thrift, protobuf) mandate
 use of schemas.
 Since there is little commonality between schemas for different data formats,
 this interface does not define much meaningful functionality for accessing
 schema details; rather, specific parser and generator implementations need
 to cast to schema implementations they use. This marker interface is mostly
 used for tagging "some kind of schema" -- instead of passing opaque
 Object -- for documentation purposes.
| Modifier and Type | Method and Description | 
|---|---|
| String | getSchemaType()Method that can be used to get an identifier that can be used for diagnostics
 purposes, to indicate what kind of data format this schema is used for: typically
 it is a short name of format itself, but it can also contain additional information
 in cases where data format supports multiple types of schemas. | 
String getSchemaType()