How to use ___Directive_description method of generated Package

...226			out.Values[i] = graphql.MarshalString("__Directive")227		case "name":228			out.Values[i] = ec.___Directive_name(ctx, field, obj)229		case "description":230			out.Values[i] = ec.___Directive_description(ctx, field, obj)231		case "locations":232			out.Values[i] = ec.___Directive_locations(ctx, field, obj)233		case "args":234			out.Values[i] = ec.___Directive_args(ctx, field, obj)235		default:236			panic("unknown field " + strconv.Quote(field.Name))237		}238	}239	return out240}241func (ec *executionContext) ___Directive_name(ctx context.Context, field graphql.CollectedField, obj *introspection.Directive) graphql.Marshaler {242	rctx := graphql.GetResolverContext(ctx)243	rctx.Object = "__Directive"244	rctx.Args = nil245	rctx.Field = field246	rctx.PushField(field.Alias)247	defer rctx.Pop()248	res := obj.Name()249	return graphql.MarshalString(res)250}251func (ec *executionContext) ___Directive_description(ctx context.Context, field graphql.CollectedField, obj *introspection.Directive) graphql.Marshaler {252	rctx := graphql.GetResolverContext(ctx)253	rctx.Object = "__Directive"254	rctx.Args = nil255	rctx.Field = field256	rctx.PushField(field.Alias)257	defer rctx.Pop()258	res := obj.Description()259	if res == nil {260		return graphql.Null261	}262	return graphql.MarshalString(*res)263}264func (ec *executionContext) ___Directive_locations(ctx context.Context, field graphql.CollectedField, obj *introspection.Directive) graphql.Marshaler {265	rctx := graphql.GetResolverContext(ctx)...

...200			out.Values[i] = graphql.MarshalString("__Directive")201		case "name":202			out.Values[i] = ec.___Directive_name(field, obj)203		case "description":204			out.Values[i] = ec.___Directive_description(field, obj)205		case "locations":206			out.Values[i] = ec.___Directive_locations(field, obj)207		case "args":208			out.Values[i] = ec.___Directive_args(field, obj)209		default:210			panic("unknown field " + strconv.Quote(field.Name))211		}212	}213	return out214}215func (ec *executionContext) ___Directive_name(field graphql.CollectedField, obj *introspection.Directive) graphql.Marshaler {216	res := obj.Name()217	return graphql.MarshalString(res)218}219func (ec *executionContext) ___Directive_description(field graphql.CollectedField, obj *introspection.Directive) graphql.Marshaler {220	res := obj.Description()221	if res == nil {222		return graphql.Null223	}224	return graphql.MarshalString(*res)225}226func (ec *executionContext) ___Directive_locations(field graphql.CollectedField, obj *introspection.Directive) graphql.Marshaler {227	res := obj.Locations()228	arr1 := graphql.Array{}229	for idx1 := range res {230		arr1 = append(arr1, func() graphql.Marshaler { return graphql.MarshalString(res[idx1]) }())231	}232	return arr1233}...

1import (2func main() {3    schema, err := ast.LoadSchema(&ast.Source{4        Input: `type Query {hello: String}`,5    })6    if err != nil {7        panic(err)8    }9    fmt.Println(schema.Types["Query"].Fields[0].Description)10}

1import (2func main() {3	type Query {4		hello: String! @exampleDirective(description: "Example")5	}6	directive @exampleDirective(description: String!) on FIELD_DEFINITION7	s, err := parser.ParseSchema(&ast.Source{Name: "schema.graphql", Input: schema})8	if err != nil {9		fmt.Println("error in parsing schema", err.Error())10	}11	if err := validator.ValidateSchemaDocument(s, s); err != nil {12		fmt.Println("error in validating schema", err.Error())13	}14	directiveDefinition := s.Directives.ForName("exampleDirective")15	fmt.Println("Description of the directive:", directiveDescription)16}17import (18func main() {19	type Query {20		hello: String! @exampleDirective(description: "Example")21	}22	directive @exampleDirective(description: String!) on FIELD_DEFINITION23	s, err := parser.ParseSchema(&ast.Source{Name: "schema.graph

1import (2func main() {3	schema {4	}5	type Query {6	}7	schema, err := parser.ParseSchema(&ast.Source{Input: schemaString})8	if err != nil {9		log.Fatal(err)10	}11	directive, err := parser.ParseDirective(&ast.Source{Input: directiveString})12	if err != nil {13		log.Fatal(err)14	}15	schema.Directives = append(schema.Directives, directive)16	doc, gqlErrs := parser.ParseQuery(&ast.Source{Input: `17	query {18	}19	`})20	if gqlErrs != nil {21		log.Fatal(gqlErrs)22	}23	validator.Validate(schema, doc)24	fmt.Println(directive.___Directive_description())25}