docstr: create HTML Body Header
  
  Args:
      header (list): Header Content
  Returns: HTML String
code: def create_body_header(header: list):
      """
      create HTML Body Header
  
      Args:
          header (list): Header Content
      Returns: HTML String
      """
      doc = Doc()
      with doc.tag("header"):
          for i in header:
              doc.asis(i)
      return doc.getvalue()
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import datetime
  from yattag import Doc, indent
label_desc: Use image node_id 24 for calling the CustomHtml obj's underlying member method code with example usage: obj.create_body_header(header) and returns: doc