      lookup_name = 'lower'
  
  
  class StrIndex(Func):
      """
      Return a positive integer corresponding to the 1-indexed position of the
      first occurrence of a substring inside another string, or 0 if the
 
</s> remove     'Concat', 'ConcatPair', 'Length', 'Lower', 'StrIndex', 'Substr', 'Upper',
 </s> add     'Concat', 'ConcatPair', 'Length', 'Lower', 'Replace', 'StrIndex', 'Substr',
    'Upper', </s> remove from .text import Concat, ConcatPair, Length, Lower, StrIndex, Substr, Upper
 </s> add from .text import (
    Concat, ConcatPair, Length, Lower, Replace, StrIndex, Substr, Upper,
)
class Replace(Func):
    function = 'REPLACE'

    def __init__(self, expression, text, replacement=Value(''), **extra):
        super().__init__(expression, text, replacement, **extra)


      lookup_name = 'lower'
  
  
class Replace(Func):
    function = 'REPLACE'

    def __init__(self, expression, text, replacement=Value(''), **extra):
        super().__init__(expression, text, replacement, **extra)


  class StrIndex(Func):
      """
      Return a positive integer corresponding to the 1-indexed position of the
      first occurrence of a substring inside another string, or 0 if the
keep keep add keep keep keep keep
 Refs #28643 -- Added Replace database function. 
django/db/models/functions/text.py