class_docstr: provide the length of a cudf::string_view like struct
code: def generic(self, args, kws):
      if isinstance(args[0], any_string_ty) and len(args) == 1:
          # length:
          # string_view -> int32
          # udf_string -> int32
          # literal -> int32
          return nb_signature(size_type, string_view)
  
imports: import operator
  import numpy
  from numba import types
  from numba.core.extending import models, register_model
  from numba.core.typing import signature
  from numba.core.typing.templates import AbstractTemplate, AttributeTemplate
  from numba.cuda.cudadecl import registry
  import rmm
label_desc: Use image node_id 1 for calling the StringLength obj's underlying member method code with example usage: obj.generic(args, kws) and returns: nb_signature