Build class for Loan model

LoanBuilder.java

public class LoanBuilder {
  
    private String name;
    private String email;
    private BigDecimal amount;
    private int installments;

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

    public LoanBuilder email(String email) {
        this.email = email;
        return this;
    }

    public LoanBuilder amount(BigDecimal amount) {
        this.amount = amount;
        return this;
    }

    public LoanBuilder installments(int installments) {
        this.installments = installments;
        return this;
    }

    public Loan build() {
        return new Loan(name, email, amount, installments);
    }
}