15: {x: 15} out of AListExprs
15: {x: 15} out of ACallExpr
15: {x: 15} out of AVardeclExpr
17: {x: 15} out of TId
17: {x: 15} out of TPluseq
17: {x: 15} out of APlusAssignOp
17: {x: 17} out of TInteger
17: {x: 17} out of AIntegerExpr
17: {x: 17} out of AVarReassignExpr
18: {x: 17} out of TKwend
18: {x: 17} out of ABlockExpr
18: {x: 17} out of ABlockExpr
18: {x: 17} out of AMainMethPropdef
18: {x: 17} out of AMainClassdef
18: {x: 17} out of AModule