def insert_const_string(self, mod, string):
        """
        Insert constant *string* (a str object) into module *mod*.
        """
        stringtype = GENERIC_POINTER
        name = ".const.%s" % string
        text = cgutils.make_bytearray(string.encode("utf-8") + b"\x00")
        gv = self.insert_unique_const(mod, name, text)
        return Constant.bitcast(gv, stringtype)

        Insert constant *string* (a str object) into module *mod*.
        
numba/core/base.py