The StringType class itself allows this flag now the parser gives no
error, if this flag is used.
Signed-off-by: Lutz Rossa <rossa@helmholtz-berlin.de>
Change-Id: I2f73cafcfb47a13b6e74e942b2dd8faa88c970fe
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/21324
Tested-by: Bjoern Pedersen <bjoern.pedersen@frm2.tum.de>
Tested-by: JenkinsCodeReview <bjoern_pedersen@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>