Returns the grouping symbol at the end of the expression list, if it exists. For example, for an expression list created by { ... }, this would return the symbol for }.
Returns the grouping symbol at the start of the expression list, if it exists. For example, for an expression list created by { ... }, this would return the symbol for {.
Type guard for implicit RExpressionList nodes, i.e., expression lists that are not created by a wrapper like {}.
Readonlyname: "RExpressionList"
Helper for working with RExpressionList AST nodes.