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+# GraphQL Schema Definition Language
+
+"""
+Color value
+"""
+scalar Color
+
+"""
+Node interface
+
+- allows (re)fetch arbitrary entity only by ID
+- allows client side cache normalization
+
+See [Relay Global Object Identification Specification](https://facebook.github.io/relay/graphql/objectidentification.htm)
+"""
+interface Node {
+  """
+  Globally unique identifier,
+  typically `${__typename}:${dbId}`
+  may be encoded in *base64*
+  """
+  id: ID!
+}
+
+"""
+A character in the Star Wars Trilogy
+"""
+interface Character {
+  """
+  The id of the character.
+  """
+  id: ID!
+
+  """
+  The name of the character.
+  """
+  name: String
+
+  """
+  The friends of the character, or an empty list if they have none.
+  """
+  friends: [Character]
+
+  """
+  Which movies they appear in
+  """
+  appearsIn: [Episode]
+
+  """
+  All secrets about their past
+  """
+  secretBackstory: String
+}
+
+"""
+A mechanical creature in the Star Wars universe.
+"""
+type Droid implements Character {
+  """
+  The id of the droid.
+  """
+  id: ID!
+
+  """
+  The name of the droid.
+  """
+  name: String
+
+  """
+  The friends of the droid, or an empty list if they have none.
+  """
+  friends: [Character]
+
+  """
+  Which movies they appear in.
+  """
+  appearsIn: [Episode]
+
+  """
+  Construction date and the name of the designer.
+  """
+  secretBackstory: String
+
+  """
+  The primary function of the droid.
+  """
+  primaryFunction: String
+
+  """
+  Chase color of the droid.
+  """
+  color: Color
+}
+
+# One of the films in the Star Wars Trilogy
+enum Episode {
+  """
+  Released in 1977.
+  """
+  NEWHOPE
+
+  """
+  Released in 1980.
+  """
+  EMPIRE
+
+  """
+  Released in 1983.
+  """
+  JEDI
+}
+
+"""
+A humanoid creature in the Star Wars universe.
+"""
+type Human implements Character {
+  """
+  The id of the human.
+  """
+  id: ID!
+
+  """
+  The name of the human.
+  """
+  name: String
+
+  """
+  The friends of the human, or an empty list if they have none.
+  """
+  friends: [Character]
+
+  """
+  Which movies they appear in.
+  """
+  appearsIn: [Episode]
+
+  """
+  The home planet of the human, or null if unknown.
+  """
+  homePlanet: String
+
+  """
+  Where are they from and how they came to be who they are.
+  """
+  secretBackstory: String
+}
+
+enum LengthUnit {
+  METER
+  FEET
+}
+
+type Starship {
+  id: ID!
+  name: String!
+  length(unit: LengthUnit = METER): Float
+}
+
+union SearchResult = Human | Droid | Starship
+
+input SearchInput {
+  name: String
+  episode: Episode
+}
+
+"""
+Root Query
+"""
+type Query {
+  """
+  Return the hero by episode.
+  """
+  hero(
+    """
+    If omitted, returns the hero of the whole saga. If provided, returns the hero of that particular episode.
+    """
+    episode: Episode
+  ): Character
+
+  """
+  Return the Human by ID.
+  """
+  human(
+    """
+    id of the human
+    """
+    id: ID!
+  ): Human
+
+  """
+  Return the Droid by ID.
+  """
+  droid(
+    """
+    id of the droid
+    """
+    id: ID!
+  ): Droid
+
+  """
+  Search everything by name
+
+  __NOTE__: You should use Relay pagination
+  """
+  search(search: SearchInput!): [SearchResult]
+    @deprecated(reason: "`search` will be replaced.")
+}
+
+"""
+Root Mutation
+"""
+type Mutation {
+  """
+  Save the favorite episode.
+  """
+  favorite(
+    """
+    Favorite episode.
+    """
+    episode: Episode!
+  ): Episode
+}
+
+"""
+Subscriptions — live events
+"""
+type Subscription {
+  """
+  Message
+  """
+  message: String
+}
+
+extend type Query {
+  """
+  Dummy query for highlighting test
+  """
+  dummy(
+    int: Int = 123
+    float: Float = 123.456
+    str: String = "Hello World!"
+    boolDefaultTrue: Boolean = true
+    boolDefaultFalse: Boolean = false
+    id: ID
+    search: SearchInput = null
+  ): Boolean
+}
+
+schema {
+  query: Query
+  mutation: Mutation
+  subscription: Subscription
+}
+
+# GraphQL Query Language
+
+query dummyQuery($int: Int) {
+  dummy(int: $int)
+}
+
+mutation favoriteEpisode($episode: Episode) {
+  favorite(episode: $episode)
+}