The current queries for Watson Work Services can be interactively interrogated via the GraphiQL in-browser IDE. The diagram below display the current queries supported.

QueryRoot is the entry point. A query includes one or more queries. A query is a JSON object which is

A query can also include variables, which will be defined as a separate HashMap of the GraphQL request. This is technically supported by the SDK - they can be added to the GraphQLRequest object - but in practice, because the SDK provides builders, the expectation is that any variables will be passed as attributes for the builder.