| AppendBase64(StringBuilder, Byte, Base64FormattingOptions) | Appends the content of a Byte array as Base64-encoded character sequence to the end of a StringBuilder. |
| AppendBase64(StringBuilder, IEnumerableByte, Base64FormattingOptions) | Appends the content of a Byte collection as Base64-encoded character sequence to the end of a StringBuilder. |
| AppendBase64(StringBuilder, ReadOnlySpanByte, Base64FormattingOptions) | Appends the content of a read-only Byte span as Base64-encoded character sequence to the end of a StringBuilder. |