old_contents: from . import (
      arrange,
      compute,
      conditional,
      count,
      distinct,
      explain,
      filter,
      group_by,
      head,
      join,
      mutate,
      select,
      summarize,
  )
  
new_contents: from . import (
      arrange,
      compute,
      conditional,
      count,
      distinct,
      explain,
      filter,
      group_by,
      head,
      join,
      mutate,
      select,
      summarize,
  )
  
  def __getattr__(name):
      import warnings
  
      if name == "LazyTbl":
          from ..backend import LazyTbl
  
          warnings.warn(
              "Importing LazyTbl from siuba.sql.verbs is deprecated. Please use "
              "`from siuba.sql import LazyTbl`",
              DeprecationWarning
          )
          return LazyTbl
  
  
subject: add deprecation warning for importing LazyTbl from verbs