code: def _truncate_name(dialect, name):
      if len(name) > dialect.max_identifier_length:
          return (
              name[0 : max(dialect.max_identifier_length - 6, 0)]
              + "_"
              + hex(hash(name) % 64)[2:]
          )
      else:
          return name
  
imports: from __future__ import annotations
  import sys
  from .None import config
  from .None import exclusions
  from ..None import event
  from ..None import schema
  from ..None import types
  from ..orm import mapped_column
  from ..util import OrderedDict
label_desc: Use image node_id 5 for calling a global function with example usage: _truncate_name(dialect, name) and returns: unknown, name