docs: def serialize_for_transport(obj_pyxb, pretty=False, strip_prolog=False, xslt_url=None):
      """Serialize PyXB object to XML ``bytes`` with UTF-8 encoding for transport over the
      network, filesystem storage and other machine usage.
  
      Args:
        obj_pyxb: PyXB object
          PyXB object to serialize.
  
        pretty: bool
          True: Use pretty print formatting for human readability.
  
        strip_prolog:
          True: remove any XML prolog (e.g., ``<?xml version="1.0" encoding="utf-8"?>``),
          from the resulting XML doc.
  
        xslt_url: str
          If specified, add a processing instruction to the XML doc that specifies the
          download location for an XSLT stylesheet.
  
      Returns:
        bytes: UTF-8 encoded XML document
  
      See Also:
        ``serialize_for_display()``
  
      """
      return serialize_gen(obj_pyxb, 'utf-8', pretty, strip_prolog, xslt_url)