class_docstr: A strategy for text strings, defined in terms of a strategy for lists of
  single character text strings.
class_docstr_tok: ["A","strategy","for","text","strings",",","defined","in","terms","of","a","strategy","for","lists","of","single","character","text","strings","."]
code: def pack(self, ls):
      return "".join(ls)
  
imports: from __future__ import absolute_import, division, print_function
  from hypothesis.errors import InvalidArgument
  from hypothesis.internal import charmap
  from hypothesis.internal.compat import binary_type, hunichr
  from hypothesis.internal.conjecture.utils import integer_range
  from hypothesis.internal.intervalsets import IntervalSet
  from hypothesis.strategies._internal.strategies import MappedSearchStrategy, SearchStrategy
label_desc: Use image node_id 3 for calling the StringStrategy obj's underlying member method code with example usage: obj.pack(ls) and returns: str