method TypeRegistry.prototype.setMetadataimport { TypeRegistry } from "https://dotland.deno.dev/x/polkadot@0.2.24/types/bundle.ts"; setMetadata(metadata: Metadata,signedExtensions?: string[],userExtensions?: ExtDef,): voidParametersmetadata: MetadataoptionalsignedExtensions: string[]optionaluserExtensions: ExtDefReturnsvoid