XML: base64bytes in request body not converted to base64 string

[jeremymeng]

The block-ids (uuid) are expected to be base64-encoded in the commitBlockList operation but they are not.

the typespec has

/** The Block lookup list. */
@Xml.name("BlockList")
model BlockLookupList {
  /** The committed blocks */
  @Xml.unwrapped
  @Xml.name("Committed")
  committed?: base64Bytes[];

  /** The uncommitted blocks */
  @Xml.unwrapped
  @Xml.name("Uncommitted")
  uncommitted?: base64Bytes[];

  /** The latest blocks */
  @Xml.unwrapped
  @Xml.name("Latest")
  latest?: base64Bytes[];
}

[jeremymeng]

I temporarily worked around it by passing the based64 encoded strings to generated code

[jeremymeng]

Fixed.