question: rename one variable to another concode_field_sep Map<Var,Var> aliases concode_elem_sep boolean repeatedly concode_elem_sep Node newName concode_elem_sep String varPrefix concode_elem_sep Node oldName concode_elem_sep String prefix concode_elem_sep Collection<Var> constants concode_field_sep Op renameVars concode_elem_sep ExprList renameVars concode_elem_sep Expr renameVars concode_elem_sep Op renameNode concode_elem_sep Op reverseVarRename concode_elem_sep Node convert concode_elem_sep Node convert concode_elem_sep Node convert concode_elem_sep Var chooseVarName
target: Op function ( Op arg0 , Var arg1 , Var arg2 ) { NodeTransform loc0 = new RenameNode ( arg1 , arg2 ) ; return NodeTransformLib . transform ( loc0 , arg0 ) ; }