lets-see-if-this-builds-on-docs-rs 0.0.2

#source: https://github.com/graphql/graphql-spec/blob/47a6bfdba35ad9b96cba501a52593d3f04c8c5e9/spec/Section%204%20--%20Introspection.md#schema-introspection

type __Schema {
  description: String
  types: [__Type!]!
  queryType: __Type!
  mutationType: __Type
  subscriptionType: __Type
  directives: [__Directive!]!
}

type __Type {
  kind: __TypeKind!
  name: String
  description: String
  # must be non-null for OBJECT and INTERFACE, otherwise null.
  fields(includeDeprecated: Boolean = false): [__Field!]
  # must be non-null for OBJECT and INTERFACE, otherwise null.
  interfaces: [__Type!]
  # must be non-null for INTERFACE and UNION, otherwise null.
  possibleTypes: [__Type!]
  # must be non-null for ENUM, otherwise null.
  enumValues(includeDeprecated: Boolean = false): [__EnumValue!]
  # must be non-null for INPUT_OBJECT, otherwise null.
  inputFields(includeDeprecated: Boolean = false): [__InputValue!]
  # must be non-null for NON_NULL and LIST, otherwise null.
  ofType: __Type
  # may be non-null for custom SCALAR, otherwise null.
  specifiedByURL: String
}

enum __TypeKind {
  SCALAR
  OBJECT
  INTERFACE
  UNION
  ENUM
  INPUT_OBJECT
  LIST
  NON_NULL
}

type __Field {
  name: String!
  description: String
  args(includeDeprecated: Boolean = false): [__InputValue!]!
  type: __Type!
  isDeprecated: Boolean!
  deprecationReason: String
}

type __InputValue {
  name: String!
  description: String
  type: __Type!
  defaultValue: String
  isDeprecated: Boolean!
  deprecationReason: String
}

type __EnumValue {
  name: String!
  description: String
  isDeprecated: Boolean!
  deprecationReason: String
}

type __Directive {
  name: String!
  description: String
  locations: [__DirectiveLocation!]!
  args(includeDeprecated: Boolean = false): [__InputValue!]!
  isRepeatable: Boolean!
}

enum __DirectiveLocation {
  QUERY
  MUTATION
  SUBSCRIPTION
  FIELD
  FRAGMENT_DEFINITION
  FRAGMENT_SPREAD
  INLINE_FRAGMENT
  VARIABLE_DEFINITION
  SCHEMA
  SCALAR
  OBJECT
  FIELD_DEFINITION
  ARGUMENT_DEFINITION
  INTERFACE
  UNION
  ENUM
  ENUM_VALUE
  INPUT_OBJECT
  INPUT_FIELD_DEFINITION
}