elifClause method
Implementation
Parser<({ExpressionNode test, List<StatementNode> body})> elifClause() =>
seq3(
ref0(blankLines),
indent.same,
seq3(
ref0(elifToken),
ref0(expression),
seq2(ref1(token, ':'), ref0(suite)).map2((_, s) => s),
),
).map3((_, _, clause) => (test: clause.$2, body: clause.$3));