method DiffieHellmanGroup.prototype.getPrivateKeyimport { DiffieHellmanGroup } from "https://dotland.deno.dev/std@0.145.0/node/crypto.ts"; getPrivateKey(): BuffergetPrivateKey(encoding: BinaryToTextEncoding): stringgetPrivateKey(_encoding?: BinaryToTextEncoding): Buffer | stringReturnsBufferParametersencoding: BinaryToTextEncodingReturnsstringParametersoptional_encoding: BinaryToTextEncodingReturnsBuffer | string