How to use the relay-compiler.transformASTSchema function in relay-compiler

export const plugin: PluginFunction = (
  schema: GraphQLSchema,
  documents: Types.DocumentFile[],
  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  config: RelayOptimizerPluginConfig
) => {
  // @TODO way for users to define directives they use, otherwise relay will throw an unknown directive error
  // Maybe we can scan the queries and add them dynamically without users having to do some extra stuff
  // transformASTSchema creates a new schema instance instead of mutating the old one
  const adjustedSchema = RelayCreate.create(
    printSchemaWithDirectives(
      transformASTSchema(schema, [
        /* GraphQL */ `
          directive @connection(key: String!) on FIELD
          directive @client on FIELD
        `,
      ])
    )
  );
  const documentAsts = documents.reduce((prev, v) => {
    return [...prev, ...v.content.definitions];
  }, [] as DefinitionNode[]);

  const relayDocuments = RelayParser.transform(adjustedSchema, documentAsts);

  const fragmentCompilerContext = new GraphQLCompilerContext(adjustedSchema).addAll(relayDocuments);

  const fragmentDocuments = fragmentCompilerContext

export const plugin: PluginFunction = (
  schema: GraphQLSchema,
  documents: Types.DocumentFile[],
  // eslint-disable-next-line @typescript-eslint/no-unused-vars
  config: RelayOptimizerPluginConfig
) => {
  // @TODO way for users to define directives they use, otherwise relay will throw an unknown directive error
  // Maybe we can scan the queries and add them dynamically without users having to do some extra stuff
  // transformASTSchema creates a new schema instance instead of mutating the old one
  const adjustedSchema = transformASTSchema(schema, [
    /* GraphQL */ `
      directive @connection(key: String!) on FIELD
      directive @client on FIELD
    `
  ]);
  const documentAsts = documents.reduce(
    (prev, v) => {
      return [...prev, ...v.content.definitions];
    },
    [] as DefinitionNode[]
  );

  const relayDocuments = RelayParser.transform(adjustedSchema, documentAsts);

  const fragmentCompilerContext = new GraphQLCompilerContext(
    adjustedSchema