docs: def resolve(
          expr, name=None,
          safe=DEFAULT_SAFE, tostr=DEFAULT_TOSTR, scope=DEFAULT_SCOPE,
          besteffort=DEFAULT_BESTEFFORT
  ):
      """Resolve an expression with possibly a dedicated expression resolvers.
  
      :param str name: expression resolver registered name. Default is the
          first registered expression resolver.
      :param bool safe: if True (Default), resolve in a safe context
          (without I/O).
      :param bool tostr: if True (False by default), transform the result into
          a string format.
      :param dict scope: scope execution resolution.
      :param bool besteffort: if True (default) auto import unknown var.
  
      :raises: KeyError if no expression resolver has been registered or if
          name does not exist in expression resolvers.
      """
  
      return _RESOLVER_REGISTRY.resolve(
          expr=expr, name=name, safe=safe, tostr=tostr, scope=scope,
          besteffort=besteffort
      )