code: def show_xref(self, f_a):
          
          if f_a:
              bytecode._PrintSubBanner("XREF Read")
              xrefs_from = f_a.get_xref_read()
              for ref_class, ref_method in xrefs_from:
                  bytecode._PrintDefault(ref_method.get_name())
                  bytecode._PrintDefault('\n')
  
              bytecode._PrintDefault('\n')
  
              bytecode._PrintSubBanner("XREF Write")
              xrefs_to = f_a.get_xref_write()
              for ref_class, ref_method in xrefs_to:
                  bytecode._PrintDefault(ref_method.get_name())
                  bytecode._PrintDefault('\n')
docs: Display where this field is read or written