NODE_ROOT@0..8
NODE_LAMBDA@0..8
NODE_PATTERN@0..6
TOKEN_L_BRACE@0..1 "{"
NODE_PAT_ENTRY@1..5
NODE_IDENT@1..2
TOKEN_IDENT@1..2 "a"
TOKEN_QUESTION@2..3 "?"
NODE_ATTR_SET@3..5
TOKEN_L_BRACE@3..4 "{"
TOKEN_R_BRACE@4..5 "}"
TOKEN_R_BRACE@5..6 "}"
TOKEN_COLON@6..7 ":"
NODE_IDENT@7..8
TOKEN_IDENT@7..8 "a"