JavaParser:如何将方法调用添加到链式调用？

myObject.method1().method2().method3();

public class Person {
    private String name;
    private int age;

    public Person setName(String name) {
        this.name = name;
        return this;
    }

    public Person setAge(int age) {
        this.age = age;
        return this;
    }

    @Override
    public String toString() {
        return "Person{name='" + name + "', age=" + age + "}";
    }
}

import com.github.javaparser.JavaParser;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.MethodDeclaration;
import com.github.javaparser.ast.expr.MethodCallExpr;
import com.github.javaparser.ast.stmt.BlockStmt;
import com.github.javaparser.ast.stmt.ReturnStmt;

public class JavaParserExample {
    public static void main(String[] args) throws Exception {
        String code = "public class Person { " +
                      "    private String name; " +
                      "    private int age; " +
                      "    public Person setName(String name) { " +
                      "        this.name = name; " +
                      "        return this; " +
                      "    } " +
                      "    public Person setAge(int age) { " +
                      "        this.age = age; " +
                      "        return this; " +
                      "    } " +
                      "    @Override " +
                      "    public String toString() { " +
                      "        return \"Person{name='\" + name + \", age=\" + age + \"}\"; " +
                      "    } " +
                      "}";

        JavaParser javaParser = new JavaParser();
        CompilationUnit cu = javaParser.parse(code).getResult().orElseThrow();

        for (MethodDeclaration method : cu.findAll(MethodDeclaration.class)) {
            if (!method.getNameAsString().equals("toString")) {
                BlockStmt body = method.getBody().orElseThrow();
                ReturnStmt returnStmt = (ReturnStmt) body.getStatements().get(0);
                MethodCallExpr methodCallExpr = new MethodCallExpr(new NameExpr("this"), method.getNameAsString());
                returnStmt.setExpression(methodCallExpr);
            }
        }

        System.out.println(cu.toString());
    }
}