A GraphQL Schema defines the capabilities of a GraphQL server. It exposes all available types and directives on the server, as well as the entry points for query, mutation, and subscription operations.
|Field : Object||Description|
|directives: [__Directive]||A list of all directives supported by this server.|
|mutationType: __Type||If this server supports mutation, the type that mutation operations will be rooted at.|
|queryType: __Type||The type that query operations will be rooted at.|
|subscriptionType: __Type||If this server support subscription, the type that subscription operations will be rooted at.|
|types: [__Type]||A list of all types supported by this server.|