code: def is_hamza(archar):
      """Checks for Arabic  Hamza forms.
      HAMZAT are (HAMZA, WAW_HAMZA, YEH_HAMZA, HAMZA_ABOVE, HAMZA_BELOW, ALEF_HAMZA_BELOW, ALEF_HAMZA_ABOVE )
      @param archar: arabic unicode char
      @type archar: unicode
      @return:
      @rtype:Boolean
      """
      return archar in HAMZAT
  
imports: import re
  from cltk.phonology.arb.utils.pyarabic import stack
label_desc: Use image node_id 9 for calling a global function with example usage: is_hamza(archar) and returns: unknown