code: def generate_message_mappings_array(outf, msgs):
      
  
      classes = []
      for msg in msgs:
          classes.append("%u: %s.self" % (msg.id, msg.swift_name))
      t.write(outf, """
  
  
  
  /**
      Array for mapping message id to proper struct
  */
  private let messageIdToClass: [UInt8: Message.Type] = [${ARRAY_CONTENT}]
  """, {'ARRAY_CONTENT' : ", ".join(classes)})
docs: Create array for mapping message Ids to proper structs