Create a grammar rule for a SPARQL built-in function that takes zero or one expression argument. Supports both FUNC(expr) and FUNC NIL syntax.
FUNC(expr)
FUNC NIL
The lexer token for the built-in function keyword.
Create a grammar rule for a SPARQL built-in function that takes zero or one expression argument. Supports both
FUNC(expr)andFUNC NILsyntax.