code: public BaseHttp2ServerBuilder setServerCredentials(final File certificatePemFile, final File privateKeyPkcs8File, final String privateKeyPassword) {
          this.certificateChain = null;
          this.privateKey = null;
  
          this.certificateChainPemFile = certificatePemFile;
          this.privateKeyPkcs8File = privateKeyPkcs8File;
  
          this.certificateChainInputStream = null;
          this.privateKeyPkcs8InputStream = null;
  
          this.privateKeyPassword = privateKeyPassword;
  
          return this;
      }
docs: <p>Sets the credentials for the server under construction using the certificates in the given PEM file and the
  private key in the given PKCS#8 file.</p>
  
  @param certificatePemFile a PEM file containing the certificate chain for the server under construction
  @param privateKeyPkcs8File a PKCS#8 file containing the private key for the server under construction
  @param privateKeyPassword the password for the given private key, or {@code null} if the key is not
  password-protected
  
  @return a reference to this builder
  
  @since 0.8