def cp_string(self, source, dest, **kwargs):
assert isinstance(source, six.string_types), "<STR_LIT>"<EOL>assert self._is_s3(dest), "<STR_LIT>"<EOL>return self._put_string(source, dest, **kwargs)<EOL>
Copies source string into the destination location.

Parameters
----------
source: string
    the string with the content to copy
dest: string
    the s3 location