1Check correct indentation use when inserting into list node 2----- 3<?php 4$this->foo = new Foo; 5$this->foo->a() 6 ->b(); 7----- 8$outerCall = $stmts[1]->expr; 9$innerCall = $outerCall->var; 10$var = $innerCall->var; 11$stmts[1]->expr = $innerCall; 12$stmts[2] = new Stmt\Expression(new Expr\MethodCall($var, $outerCall->name)); 13----- 14<?php 15$this->foo = new Foo; 16$this->foo->a(); 17$this->foo->b();