code: def resolve_address(addr: str) -> str:
      """
      Apply scheme-specific address resolution to *addr*, replacing
      all symbolic references with concrete location specifiers.
  
      In practice, this can mean hostnames are resolved to IP addresses.
  
      >>> resolve_address('tcp://localhost:8786')
      'tcp://127.0.0.1:8786'
      """
      scheme, loc = parse_address(addr)
      backend = registry.get_backend(scheme)
      return unparse_address(scheme, backend.resolve_address(loc))
  
file_path: distributed/distributed/comm/addressing.py
imports: from __future__ import annotations
  import itertools
  import dask
  from distributed.comm import registry
  from distributed.utils import get_ip_interface
label_desc: Use image node_id 9 for calling a global function with example usage: resolve_address(addr) and returns: unparse_address