Add group and choice options

[HassanAkbar]

XML type conditions

• Choice: one of these
• Group: all of these

Originally posted by @ronaldtse in #9 (comment)

[HassanAkbar]

@ronaldtse I have a few questions regarding what to validate in the above options

For choice option

• Should we raise an error if none of the option is provided from the choice group?
• Should we raise an error if more then one option is provided from the choice group?

For group option

• Should we raise an error if not all the options are selected from the group?

[ronaldtse]

For choice option

• Should we raise an error if none of the option is provided from the choice group?

Yes, instead of raising it, add this requirement to the validate process.

• Should we raise an error if more then one option is provided from the choice group?

Yes, instead of raising it, add this requirement to the validate process.

For group option

• Should we raise an error if not all the options are selected from the group?

Yes, instead of raising it, add this requirement to the validate process.