class Linkage extends Structimport { Linkage } from "https://dotland.deno.dev/x/polkadot@0.2.23/types-codec/extended/index.ts"; ConstructorsnewLinkage(registry: Registry,Type: CodecClass | string,value?: unknown,)Type ParametersT extends CodecPropertiesreadonlynext: Option<T>readonlyprevious: Option<T>MethodstoRawType(): stringtoU8a(): Uint8ArrayStatic MethodswithKey<O extends Codec>(Type: CodecClass | string): CodecClass<Linkage<O>>