Clarification regarding expression style string value for a table type value

[lasinicl]

Description:
According to the spec[1] the expression style string value of a table type value is table key(k) [R1,R2] where R1,R2 is in expression style.
What should be the expression style string value for a keyless table?
table key() [R1,R2] or table [R1,R2]

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Code sample that shows issue:

Related Issues:
#499

[jclark]

I prefer the former (keyless tables are an unusual case, so it's good to make that explicit).