larksuite-oapi/src/main/java/com/larksuite/oapi/okio1_17/ByteString.java
public static @Nullable
  ByteString decodeBase64(String base64) {
    if (base64 == null) throw new IllegalArgumentException("base64 == null");
    byte[] decoded = Base64.decode(base64);
    return decoded != null ? new ByteString(decoded) : null;
  }
/**
   * Decodes the Base64-encoded bytes and returns their value as a byte string.
   * Returns null if {@code base64} is not a Base64-encoded sequence of bytes.
   */
Decodes the Base64-encoded bytes and returns their value as a byte string.
Returns null if  base64 is not a Base64-encoded sequence of bytes.
Decodes the Base64 - encoded bytes and returns their value as a byte string . Returns null if base64 is not a Base64 - encoded sequence of bytes .
public static @Nullable
  ByteString decodeBase64(String base64) {
    if (base64 == null) throw new IllegalArgumentException("base64 == null");
    byte[] decoded = Base64.decode(base64);
    return decoded != null ? new ByteString(decoded) : null;
  }
public static @ Nullable ByteString decodeBase64 ( String base64 ) { if ( base64 == null ) throw new IllegalArgumentException ( "base64 == null" ) ; byte [ ] decoded = Base64 . decode ( base64 ) ; return decoded != null ? new ByteString ( decoded ) : null ; }
Decodes the Base64-encoded bytes and returns their value as a byte string.
Decodes the Base64 - encoded bytes and returns their value as a byte string .