GraphQL introspection query in graphql-java?

IntrospectionQuery.java

interface IntrospectionQuery {
            
    String INTROSPECTION_QUERY = "\n" +
            "  query IntrospectionQuery {\n" +
            "    __schema {\n" +
            "      queryType { name }\n" +
            "      mutationType { name }\n" +
            "      subscriptionType { name }\n" +
            "      types {\n" +
            "        ...FullType\n" +
            "      }\n" +
            "      directives {\n" +
            "        name\n" +
            "        description\n" +
            "        locations\n" +
            "        args {\n" +
            "          ...InputValue\n" +
            "        }\n" +
            "      }\n" +
            "    }\n" +
            "  }\n" +
            "\n" +
            "  fragment FullType on __Type {\n" +
            "    kind\n" +
            "    name\n" +
            "    description\n" +
            "    fields(includeDeprecated: true) {\n" +
            "      name\n" +
            "      description\n" +
            "      args {\n" +
            "        ...InputValue\n" +
            "      }\n" +
            "      type {\n" +
            "        ...TypeRef\n" +
            "      }\n" +
            "      isDeprecated\n" +
            "      deprecationReason\n" +
            "    }\n" +
            "    inputFields {\n" +
            "      ...InputValue\n" +
            "    }\n" +
            "    interfaces {\n" +
            "      ...TypeRef\n" +
            "    }\n" +
            "    enumValues(includeDeprecated: true) {\n" +
            "      name\n" +
            "      description\n" +
            "      isDeprecated\n" +
            "      deprecationReason\n" +
            "    }\n" +
            "    possibleTypes {\n" +
            "      ...TypeRef\n" +
            "    }\n" +
            "  }\n" +
            "\n" +
            "  fragment InputValue on __InputValue {\n" +
            "    name\n" +
            "    description\n" +
            "    type { ...TypeRef }\n" +
            "    defaultValue\n" +
            "  }\n" +
            "\n" +
            "  fragment TypeRef on __Type {\n" +
            "    kind\n" +
            "    name\n" +
            "    ofType {\n" +
            "      kind\n" +
            "      name\n" +
            "      ofType {\n" +
            "        kind\n" +
            "        name\n" +
            "        ofType {\n" +
            "          kind\n" +
            "          name\n" +
            "        }\n" +
            "      }\n" +
            "    }\n" +
            "  }\n";
}