JMultiExpression multi = new JMultiExpression(body.getSourceInfo());
CloneCalleeExpressionVisitor cloner = new CloneCalleeExpressionVisitor();
for (JStatement stmt : body.getStatements()) {
if (stmt instanceof JExpressionStatement) {
JExpressionStatement exprStmt = (JExpressionStatement) stmt;
JExpression expr = exprStmt.getExpr();
JExpression clone = cloner.cloneExpression(expr);
multi.exprs.add(clone);
} else if (stmt instanceof JReturnStatement) {
JReturnStatement returnStatement = (JReturnStatement) stmt;
JExpression expr = returnStatement.getExpr();